Term
| rate of change in velocity |
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Definition
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Term
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Definition
a= vf-vi t OR a=(delta)v t |
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Term
| push or pull that has potential to cause acceleration |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| sum of all forces acting on an object |
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Definition
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Term
force between two objects in contact with each other that opposes motion |
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Definition
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Term
when both objects are still |
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Definition
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Term
| when either one or both of the objects is moving |
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Definition
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Term
| What are the 3 types of kinetic friction? |
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Definition
A. sliding friction B. rolling friction C. fluid friction |
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Term
| the distance traveled by an object divided by the time interval during which the motion occured |
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Definition
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Term
| the speed of an object in a particular direction |
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Definition
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Term
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Definition
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Term
| the change in position of an object |
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Definition
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Term
| an object's change in postion relative to a reference point |
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Definition
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Term
| tells what will happen under certain conditions without explaining why |
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Definition
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Term
| how is a scientific law different from a scientific theory? |
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Definition
a scientic theory explains what happened and explains why
a scientific law tellw what will happen without explaining why |
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Term
| what are the three laws of motion? |
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Definition
1st- inertia
2nd- law of unbalanced forces
3rd- action/reaction |
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Term
| the tendency of moving objecs to keep moving or an object at rest to remain at rest (the property of matter related to its mass) |
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Definition
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Term
| what is the formula for force |
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Definition
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Term
| what is the unit for force? |
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Definition
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Term
| the second law says that one newton is..... |
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Definition
| 1 N= the amount of force required to cause an object with a mass of 1 kg to accelerate at 1m/s2 |
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Term
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Definition
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Term
F=G m1-m2 d2 what are the two factors of gravity in this equation? |
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Definition
F=G m1-m2 = mass of objects d2 = distance between objects the mass and distances of the objects are the two factors of gravity |
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Term
| force that exists between all matter |
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Definition
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Term
| what is the constant velocity of gravity on Earth? |
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Definition
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Term
| motion of a body when only gravity is acting on it |
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Definition
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Term
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Definition
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Term
| maximum velocityon falling objects when air resistance and gravity balance |
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Definition
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Term
| Does an increase in surface area increase or decrease air resistance? |
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Definition
| it increases air resistance |
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Term
| one object moving around another is: |
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Definition
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Term
| what are two factors of orbital motion |
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Definition
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Term
| the motion of an object that has 2 forces acting on it (horizontal and vertical)(and the two forces are entirely independent of each other) |
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Definition
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Term
| for every action foce there is an equal and opposite reaction foce |
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Definition
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Term
| what is the formula for momentum? |
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Definition
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Term
| what is the unit for momentum? |
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Definition
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Term
| when momentum is transferred from one object to another, but cannot be created or destroyed |
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Definition
| law of conservation of momentum |
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Term
| makes work seem easier by increasing distance over which force is applied or by changing the direction of the force |
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Definition
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Term
| tells how much force or distance is changed |
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Definition
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Term
| what is the formula for mechanical advantage? |
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Definition
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Term
| what are the two classes of simple machines? |
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Definition
1.levers
2.inclined planes |
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Term
| rigid arm that moves around a fixed point called a fulcrum |
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Definition
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Term
| how many classes of levers are there? |
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Definition
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Term
| which lever class has the fulcrum in the middle, the resistance force is the output, and the input force is on each end? (an example is a see saw) |
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Definition
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Term
| which lever class has the resistance force in the middle, and the fulcrum on one end? (example is wheelbarrow) |
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Definition
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Term
| which lever class has the input force in the middle and the fulcrum at one end? (example is broom) |
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Definition
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Term
| what are two modification of levers? |
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Definition
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Term
| what is an example of an inclined plane? |
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Definition
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Term
| what is an example of 2 inclined planes back to back? |
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Definition
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Term
| what is an example of an inclined plane wrapped around a cylinder? |
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Definition
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Term
| what are the 6 types of simple machines? |
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Definition
1.levers
2.wheel and axle
3.pulley
4.inclined plane
5.wedge
6.screw |
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Term
| Is the input of a machine what you do or what the machine does? |
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Definition
input=what you do
output=what the machine does |
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Term
| the transfer of energy to a body by the application of a force that causes the body to move in the direction of the force |
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Definition
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Term
| a quantity that measures the rate at which work is done or energy is transformed |
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Definition
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Term
| a quanitity that measures how much a machine multiplies force or distance |
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Definition
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Term
| one of the six basic types of machines which are the basics for all other forms of machines |
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Definition
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Term
| a machine made of more than one simple machine |
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Definition
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Term
| push or pull with potential to cause acceleration |
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Definition
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Term
| force that creates motion |
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Definition
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Term
| something with potential to do work |
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Definition
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Term
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Definition
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Term
| what is the formula for kinetic energy? |
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Definition
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Term
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Definition
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Term
| energy stored in the form of chemical bonds (and is it potential or kinetic) |
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Definition
-chemical energy
-potential energy |
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Term
| energy stored in the nucleus of an atom (and is it potential or kinetic) |
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Definition
-nuclear energy
-potential energy |
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Term
| what is the formula for potential energy? |
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Definition
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Term
| potential energy that an object has because of its' position |
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Definition
| gravitational potential energy |
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Term
| when energy cannot be created or destroyed, but can be changed from one form to another |
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Definition
| law of conservation of energy |
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Term
| sum of KE and GPE in a large scale system and is energy that is available to do work or effect change |
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Definition
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Term
| measure of how much of the work you put into a machine is converted to useful work out |
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Definition
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Term
| what is the formula for efficiency? |
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Definition
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Term
| average kinetic energy of the particles in a substance |
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Definition
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Term
| transfer of KE from a warmer substance to a cooler one until equilibrium |
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Definition
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Term
| the sum of all of the KE in an object |
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Definition
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Term
| a measurement based on the boilng and freezing points of water |
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Definition
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Term
| a measurement based on absoulte zero |
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Definition
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Term
| the temperature at which motion stops |
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Definition
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Term
| what are the three methods of heat transfer? |
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Definition
-conduction
-convection
-radiation |
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Term
-has direct molecular contact
-must have a medium |
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Definition
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Term
| what is a good conductor? |
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Definition
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Term
-transfer of heat energy through a fluid(a liquid or a gas) due to density differences
-warm particles spread apart because they are moving fster and rise; once they cool off, they clump together and sink |
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Definition
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Term
-the movement of energy through waves
-can move through a vaccum |
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Definition
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Term
| substance that detects heat transfer |
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Definition
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Term
| amount of energy required to add to a substance to raise its temp. by 1 degree Celsius |
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Definition
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Term
| what is the formula for specific heat? |
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Definition
| delta Q= m x delta T x C' |
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Term
| as most substances increase in temp. the particles move faster, separate, volume increases |
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Definition
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