Term
The gravational force exerted by a large body, such as Earth, is 

Definition


Term
The period of simple pendulum depends upon 

Definition
the length of the pendulum 


Term
To resolve a force vector into its components, a set of perpendicular axes is drawn. Then the ____ is drawn to scale at the correct angle 

Definition


Term
Ignoring air resistance, if a 10kg ball and a 200kg crate were both dropped from the top of a building, the acceleration of the crate would be ____ the acceleration of the ball 

Definition


Term

Definition


Term
Using ____ rise and run will result in the most accurate slope on a positiontime graph 

Definition


Term
An object is in equilibrium when 

Definition
the net sum of the forces are zero 


Term
The change in a runner's velocity with time is the runner's 

Definition


Term
According to Newton's ____ law, an object with no net force acting on it remains at rest or in motion with a constant velocity 

Definition


Term
Which of the following are the results of the work of physicists 

Definition


Term
One of the first European scientists to claim publicly that knowledge must be based on observations and experiments was 

Definition


Term
A hiker moves 15 km due east and then heads due north for 8 km. What is the direction of the resultant 

Definition


Term
When adding or subtracting measurements, first perform the operation and then round off the result to correspond to the ____ value involved 

Definition


Term
Where would a pitcher have to aim a fast ball in order to have it pass at the height of the batter's chest 

Definition
just above the height of the batter's chest 


Term
The metric prefix that means 100 is 

Definition


Term
What is indicated by a smooth, upward curving line on a graph 

Definition
a direct relationship between y and the square of x 


Term
Losing speed as you ride your bike uphill demonstrates Newton's ____ law 

Definition


Term
The slope of a straightline graph is the vertical change ____ the horizontal change 

Definition


Term
The acceleration due to gravity of a freefalling object 

Definition


Term
Knowing the magnitudes of the hypotenuse of a right trangle and the side opposite angle theata, you could comput the ____ of angle theata 

Definition


Term
Why is the work of theoretical physicists in superconductivity not finished? 

Definition
There is no complete explanation of how new superconducters work. 


Term
The BCS theory was developed to explain how 

Definition


Term
The equilibriant force is ____ the resultant 

Definition
equal in magnitude but opposite in direction to 


Term
Two teams in a tug of war exert the same amount of force on eachother and the rope does not move. Newton's ____ law explains why the rope does not move. 

Definition


Term
To produce mechanical resonance, the time between applied forces must equal the ____ of the object 

Definition


Term
For an object moving with circular motion, the direction of centripetal acceleration is 

Definition
toward the center of the circle 


Term
The degree of exactness to which the measurement of a quantity can be reproduced is called 

Definition


Term
Which of the following is called the language of physics? 

Definition


Term
If the force of gravity on a balloon is 3000 N, and the lift force provided by the atmosphere is 3300 N, in which direction is the net force acting? 

Definition


Term
The attractive force that acts between all objects is 

Definition


Term
A child on a bicycle rides eastward past a house, as a car, also traveling eastward, slowly passes. Which of the following people would preceive the biker as having the greatest velocity? 

Definition


Term
If the horizontal component of a force is positive, then, by convention, the force acts 

Definition


Term
In scientific notation, a number between 1 and 10 is multiplied by 

Definition
a wholenumber power of 10 


Term
On a velocitytime graph, the slope of the tangent to the curve at a given point is the 

Definition
instantaneous acceleration 


Term
To avoid parallax errors, laboratory instruments should be read 

Definition


Term
Newton's ____ law states that the acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass 

Definition


Term
In trajectory motion, the initional horizontal velocity is ____ the final horizontal velocity 

Definition


Term
An equation is wrong if both sides contain 

Definition
different units of measure 


Term
An object in circular motion travels a distance of ____ during its period 

Definition


Term
In projectile motion, the rising and falling times of the object are equal if the launching position is ____ the landing position 

Definition


Term

Definition
lowest possible temperature for matter 


Term
A cyclist finishes a 100km race in 2.7 hours. The average velocity 

Definition
equals the displacement divided by the total time 


Term
The slope of a positiontime graph is the ____ of an object 

Definition


Term
The dock worker walks up a plank at constant speed. The frictional force that keeps the worker from slipping is equal in magnitude to the 

Definition
force parallel to the plank 


Term
The ____ of any point on a velocitytime graph equals the instantaneous velocity at the time 

Definition


Term
The effects of the resultant vector is ____ the effect of the original vectors 

Definition


Term
If the average velocity of an object is the same for all time intervals, then the object moves at a(n) 

Definition


Term
A child lets go of a ball at the top of a driveway. The instantaneous acceleration of the ball as the child lets go is 

Definition


Term
Mass and weight are related by 

Definition


Term
Distance is a quantity that 

Definition


Term
A variable that can be manipulated in an experiment is 

Definition


Term
Suppose an object is dropped from a moving train. The time it takes to fall 

Definition
is independent of the observer's position 


Term
Suppose you pull a wagon along a horizontal sidewalk. The force that pulls the wagon forward over the sidewalk is the ____ force 

Definition


Term
The downstream velocity of a river that flows south ____ a boat's eastward velocity 

Definition


Term
The displacement of an object moving with a constant acceleration can be calculated by 

Definition
multiplying the sum of the initial and final velocitites by the time interval and dividing by 2 


Term
A dock worker pulls a trunk up a plank and accidentally lets go of it. The trunk begins to slide down the plank. When is the friction between the trunk and the plank at its maximun? 

Definition
just as the worker lets go of the trunk 


Term
The effect of air resistance on the tail of a kite is ____ the effect of air resistance on the body of the kite 

Definition


Term
When the displacement of an object with simple harmonic motion is greatest, the acceleration has a 

Definition


Term
A runner is 5.0 km east of another runner, who is 5.0 km east of a parking lot. The parking lot is 

Definition
a reference point for both runners 


Term
If air resistance is ignored, the displacement of a falling object is 

Definition
directly proportional to the square of time 


Term
The vertical change in position of an object that is dropped and that of and identical object that is thrown horizontally from the same height 

Definition


Term
The area under the curve on a velocitytime graph equals the 

Definition
displacement from the origional position to its position at time t 


Term
Constant acceleration on a velocitytime graph produces a curve that is 

Definition


Term
In Greenland, the acceleration due to gravity is ____ the acceleration due to gravity at Earth's equator 

Definition


Term
A surprising aspect of physics is that its results can be described by a small number of relationships, or 

Definition


Term
Difficulty in pushing a large crate from rest involves 

Definition


Term
The slope of the tangent on a positiontime graph equals the 

Definition


Term
The area under a curve on a velocitytime graph for an object moving with a uniform acceleration is the ____ of that object 

Definition


Term
Aristotle and his followers were mainly concerned with finding out 

Definition
why specific events occur 


Term
As the angle of an inclined plane increases, the parallel force ____ and the perpendicular force ____ 

Definition


Term
When multiplying quantities expressed in scientific notation (m x 10n) that have different exponents, you multiply the values of m and ____ the exponents 

Definition


Term
On a positiontime graph, the velocity equals 

Definition
the rise divided by the run 


Term
Which of the following best describes the relationship between the final and initial velocities of a uniformly accelerating object? 

Definition
The final velocity increases as the initial velocity increases 


Term
If you push against a wall, the wall pushes back against you with ____ force 

Definition


Term
When the drag force on an object equals the force of gravity, ____ occurs 

Definition


Term
A toy rocket is launced straight up into the air. When the rockey reaches its maximum height, its velocity is 

Definition


Term
Aristotle believed that all matter was composed of 

Definition


Term
The fundamental SI unit for time is the 

Definition


Term
When adding vectors graphically, the direction and length of each vector must 

Definition


Term
A toy rocket is launched straight up into the air. The total displacement upon landing is 

Definition


Term
To solve the equation vt=d for t, 

Definition
divide both sides of the equation by v 


Term
When vectors are resolved into components on an inclined plane, the ____ force is the one that acts along the incline 

Definition


Term
A runner traveled 15 km east then backtracked 11 km before stopping. The displacement from the original position is 

Definition


Term
When constructing a graph from data, the range of the xaxis is determinded by the range of the 

Definition


Term
For an object moving along a trajectory, the horizontal acceleration of an object ____ as the position changes 

Definition


Term
A runner is 5.0 km east of another runner, who is 5.0 km east of a parking lot. Where is the first runner with respect to the parking lot? 

Definition


Term

Definition


Term
A graph that is a hyperbola represents ____ relationship 

Definition


Term
For an accelerating object, the slope on a positiontime graph 

Definition


Term
As the angle of an inclined plane increases, the acceleration of an object approaches 

Definition


Term
Vectors can be added in any order as long as the 

Definition
tail of one vector is placed at the head of another vector 


Term
Metals such as copper can be pounded into thin sheets due to 

Definition


Term
Momentum can be calculated by multiplying mass by 

Definition


Term
On the Kelvin temperature scale, what is the freezing point of water? 

Definition


Term
If thermal energy is added to equal masses of substances, they will show different changes in temperature because their ____ are different 

Definition


Term
When a golf club hits a golf ball, the change in momentum of the ball is ____ the change in momentum of the club 

Definition


Term
The amount of heat needed to melt one kilogram of a substance is called that substance's 

Definition


Term
How much work is done if you raise a 6.0N weight 1.5m above the ground? 

Definition


Term
The SI unit of pressure is the 

Definition


Term
The ____ states that the angle of incidence equals the angle of reflection 

Definition


Term
Anything that has mass is surrounded by 

Definition


Term
A change in the kinetic energy of an object is equal to the 

Definition
new work done on the object 


Term
At sea level, if the area of a surface increases, the pressure of the atmosphere on the surface 

Definition


Term
Which of the following objects is not being used as a simple machine? 

Definition
a stick used to hold up a wilted plant 


Term
Which form of thermal energy transfer is most effective in fluids? 

Definition


Term
The energy that flows as a result of a difference in temperature is 

Definition


Term
Any object that has energy has the ability to 

Definition


Term
The total amount of energy in an isolated, closed system 

Definition


Term
According to ____, an imaginary line from the sun to a planet sweeps out equal areas in equal time intervals 

Definition
Kepler's second law of planetary motion 


Term
As the distance between two bodies increase, the force of attraction between the bodies 

Definition


Term
The buoyant force exerted on an object immersed in a fluid is equal to 

Definition
the weight of the displaced fluid 


Term
As heat is applied to a sample of water at 1 C, the volume of the water 

Definition


Term
In his example, Cavendish was able to determine 

Definition


Term
Two moving objects collide and move apart on paths that are 120* apart. The total momentum of the objects after the collision is ____ the total momentum before the collision 

Definition


Term
When waves spread our around the edge of a barrier, ____ occurs 

Definition


Term
If an object moving at a rate of 20 m/s collides with a stationary object and the two objects move away together, the velocity of the combined objects will be 

Definition


Term
When a golf club hits a golf ball, the change in velocity of the ball is ____ that of the club 

Definition


Term
Surface tension is the result of ____ forces within a liquid 

Definition


Term
An object has energy caused by its motion. This is 

Definition


Term
According to Einstein's general theory of relativity 

Definition
mass causes space to be curved 


Term
The total increase in thermal energy of a system is the work done on it ____ the heat added to it 

Definition


Term
A(n) ____ transmits energy without transferring matter 

Definition


Term
The hotness of a body it its 

Definition


Term

Definition
efficiency is always 100% 


Term
In which of the following situations is work done on the football by gravity? 

Definition


Term
When a force is exerted on an object, work is done only if the object 

Definition


Term
The transfer of energy by mechanical means is 

Definition


Term
The shortest time interval during which wave motion repeats is the 

Definition


Term
Astronauts in an orbiting space shuttle experience a sensation of weightlessness because 

Definition
the space shuttle is falling freely toward Earth 


Term
A(n) ____ is produced during destructive interference of waves 

Definition


Term
Unlike work, heat is energy transferred because of 

Definition
a difference in temperature 


Term
A system is said to be closed if 

Definition
objects cannot enter or leave it 


Term
Vibrating bells produce ____ waves 

Definition


Term
Waves on banjo strings are ____ waves 

Definition


Term
During constructive interference, the individual wave pulses 

Definition
retain their original sizes and shapes 


Term
If no net force acts on a body 

Definition
the velocity of the body is constant 


Term
The gravitational potential energy of an object close to Earth is directly related to 

Definition
both the mass and the height of the object 


Term
If 25 g of hot water are added to 35 g of cold water, the heat lost by the hot water is ____ the heat gained by the cold water 

Definition


Term
The state of matter in which atoms become torn apart is 

Definition


Term
When you throw a ball up into the air, the total energy of the ball at any point in its flight can be expressed as kinetic energy ____ potential energy 

Definition


Term
If two bodies meet in an elastic collision, the total KE of the bodies before the collision is ____ the total KE of the bodies after the collision 

Definition


Term
Which of the following make up a complex machine? 

Definition


Term
In which of the following situations is no work done on a football? 

Definition
carrying the football down the field 


Term
Dropping a stone into water will produce a(n) 

Definition


Term
Pressure can be calculated as force ____ area 

Definition


Term
During its orbital period, as a planet moves closer to the sun, the orbital velocity of the planet 

Definition


Term
The speed of any mechanical wave depends on 

Definition
the medium through which it travels 


Term
The kinetic energy of a boulder weighting 50.0 N perched on the edge of a cliff 25.0 m high is 

Definition


Term
As an object falls toward Earth, the potential energy of the object 

Definition


Term
If the mechanical advantage of a machine is less than 1 

Definition
effort force is greater than resistance force 


Term
Which of these is NOT needed to find the kinetic energy of an object? 

Definition


Term
If an object with a velocity of 50 m/s has the same momentum as that of a 10kg mass having a velocity of 20 m/s, the mass of the object is 

Definition


Term
An internal force ____ the total momentum of a system 

Definition


Term
According to Newton's law of universal gravitation, the force of attraction between any two masses is directly related to 

Definition
the product of the two masses 


Term
When light from the air enters a body of water, some of the energy moves back into the air as a(n) ____ wave 

Definition


Term
The change in the direction of waves at the boundary between two different media is 

Definition


Term
In which of the following situations is work done on the football by a person? 

Definition


Term
The greatest change in momentum will be produced by 

Definition
a large force acting over a long time 


Term
When a golfer hits a golf ball, the force exerted by the ball on the club is ____ that exerted by the club on the ball 

Definition


Term
One definition of power is 

Definition


Term
The number of complete vibrations per second is the 

Definition


Term
Using an idea machine, a worker exerts an effort force of 5.0 N to move a 12.0N weight a distance of 3.0 meters. The effort distance is 

Definition


Term
According to Bernoulli's principle, as the velocity of a fluid increases 

Definition
the pressure exerted by the fluid decreases 


Term
The process by which matter changes state from a gas to a liquid is 

Definition


Term

Definition
thermal energy to mechanical energy 


Term
When heated, only matter in the solid state exhibits 

Definition


Term
A crystal lattice is a characteristic of many 

Definition


Term
According to Pascal's principle, any change on a confined fluid 

Definition
is transmitted unchanged througout the field 


Term
A machine with a mechanical advantage greater than one 

Definition


Term
If the average kinetic energy of the particles that make up a liquid increases 

Definition
the temperature of the liquid increases 


Term
An object that is deformed by a force and returns to its original form when the force is removed shows the property of 

Definition


Term
The shortest distance between two points on a wave where the watve pattern is repeated is the 

Definition


Term
When two objects are at thermal equilibrium 

Definition
they are at the same temperature 


Term
Impusles can be represented by 

Definition


Term
The disorder in a system is known as 

Definition

