Kinematics

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction

A change in velocity over time is known as:

• acceleration
• constant speed
• average speed
• displacement

The unit we use to measure acceleration is ___. 

• meters / second 
• meters 
• seconds 
• meters / second / second 

The speedometer on your car tells you

• average velocity
• instantaneous velocity
• average speed
• instantaneous speed

At 60 seconds, how far had this object traveled? 

• 0 m
• 10 m
• 20 m
• 40 m

A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:

• 19.6 m/s
• -5.4 m/s
• -44.6 m/s
• 44.6 m/s

How much time would it take for an object to fall 4.7 meters?

• 0.959 s
• 4.79 s
• 0.979 s

A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?

• 1.3 m/s²
• 2.5 m/s²
• 3.0 m/s²
• 7.5 m/s²

A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 

• 4.20 m
• 52.5 m
• 105 m
• 158 m

A dog runs with an initial speed of 7.5 m/s to a stop in 15 seconds.  What is the dog's acceleration?

• -7.5 m/s
• -7.5 m/s²
• -0.5 m/s²
• 7.5 mi//hr