How fast something is moving / the distance covered per unit time
100
What can be neglected during free fall?
Air resistance
100
Acceleration is the rate at which what happens?
Velocity changes
100
What is the average speed of a family on a road trip who travels 250 km in 5 hours?
50 km/hr
200
Velocity
Speed in a given direction / how fast and in what direction
200
In free fall, this is the only thing acting on the falling object
What is gravity
200
When looking at the speedometer in your car, you are looking at this.
What is instantaneous velocity?
200
What is the appropriate equation for how fast an object freely falls from a position of rest?
v=at
300
Acceleration
The rate at which velocity changes with respect to time (a rate of a rate)
300
What is elapsed time?
The time that has passed since the beginning of the fall.
300
This type of graph is used for speed vs. time and this type of graph is used for distance vs. time.
What are linear and parabolic?
300
What is the appropriate equation for how far an object falls from rest?
d=.5at2
400
Instantaneous speed
The speed at any instant
400
During free fall, we use this value for acceleration.
What is 9.8 m/s2?
400
How much time does a car with an acceleration of 5 m/s2 take to go from 5 m/s to 40 m/s?
7 s
400
What is the instantaneous speed of an apple that freely falls from a rest position and accelerates at 10.0 m/s for 1.5 s?
15 m/s
500
Constant Velocity
Having both a constant speed and constant direction
500
If a ball is thrown upward, at the very top, just before the ball comes back down, what is the speed?
v=0 m/s
500
An apple falls from a tree and 0.5 s later hits the ground. How fast is the apple falling when it hits the ground?
4.9 m/s
500
Calculate the instantaneous speed and distance fallen for an object that falls freely from rest for 8 s?
v=80 m/s
d=320 m
500
Ms. Austin is driving in her sports car at 30.0 m/s when a ball rolls out into the street in front of her. She slams on her brakes and comes to a stop in 3.00 s. What was the acceleration of Ms. Austin's car?