Term
How is an arc created?
______ will only go as fast as the initial force makes it go; it can't go faster.
________ slows down as it gets to the top of the arc.
The only force acting on it is ________.
When it reaches the top of the arc, its acceleration reaches ________. |
|
Definition
a simultaneous up and down motion
horizontal component
vertical component
gravity
zero vertically |
|
|
Term
Motion is _____.
What is the formula for speed?
________ shows the speed at a given time. In a car it is measured by _______.
What is the formula for average speed?
What is the formula for instantaneous speed?
What is the formula for distance?
What is the formula for acceleration?
What is the formula for velocity aqcuired in free fall from rest?
What do you round gravity to?
What is the formula for distance fallen in free fall from rest? |
|
Definition
relative
speed=distance/time
instantaneous speed; the speedometer
average speed=total distance covered/time interval
instantaneous speed=acceleration*time
distance=average speed*time
acceleration=change in velocity/time interval
v=gt
10 m/s^2
d=(1/2)gt^2 |
|
|
Term
____ is a number; ex. temperature, fever, speed, and can be positive or negative.
_____ have a speed and directional component attatched to it.
The magnitude is the _______.
Constant speed is different from constant velocity because velocity involves ______.
It is (impossible/possible) to have constant speed and constant velocity. Give an example. |
|
Definition
scalar
vector quantities
scalar
direction
possible; Racecar constantly going 100 mph on a circular track. |
|
|
Term
What is speed? (2)
What is velocity?
What is acceleration?
What is free fall?
What is the formula for acceleration along a straight line? |
|
Definition
How fast something moves.
The distance traveled per unit of time.
The speed of an object and specification of its direction of motion.
The rate at which velocity changes with time in either direction, magnitude, or both.
Motion under the influence of gravity only.
acceleration (along a straight line)=change in speed/time interval |
|
|
Term
| What is instantaneous speed? |
|
Definition
| The speed of an object at any instant. |
|
|
Term
What is velocity?
What is acceleration?
What is the opposite of acceleration?
Can you accelerate even if your constant speed doesn't change? If yes, give example. |
|
Definition
Speed in a given direction.
How quickly velocity changes.
decceleration
yes, driving in a circle changes velocity and therefore causes acceleration |
|
|
Term
Who developed the concept of acceleration and with what experiment?
The greater the ______ the greater the acceleration. |
|
Definition
Galileo; inclined planes
incline |
|
|
Term
Free fall acceleration is due to ______.
When you throw a rock in the air and it has reached its highest point, what is its instantaneous speed?
It slows as it rises by _______. |
|
Definition
|
|
Term
The distance traveled by an accelerating object is proportional to ______.
Who discovered this? |
|
Definition
the sqaure of time
Galileo |
|
|
Term
Explain why it is scientifically impossible for a person to jump more than 2 feet high.
What is the formula for hang time? |
|
Definition
The only applied force is the one when your feet are touching the ground.
hang time=√[(distance*distance)/gravity] |
|
|
