Which runner stopped for a rest?

• Albert
• Bob
• Charlie

During which interval is the object traveling at a constant velocity?

• B to C
• D to E
• F to G
• it traveling at a constant velocity during all of the intervals shown.

Calculate the acceleration for segment A.

• 2 m/s²
• 20 m/s²
• -2 m/s²
• 0 m/s²

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

How far will a car move in 5 seconds if it started from rest and accelerates uniformly at 2.5 ms^-2?

• 12.5 m
• 125 m
• 6.25 m
• 31.25 m

If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s²?

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s

When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s
• 40 m/s²
• -40 m/s²
• 40 m/s

The graph represents the motion of a train travelling between two stations.

Which statement about the train is correct?

• Its acceleration takes a longer time than its deceleration.

• It travels at constant speed for less than half of its journey time.

• It travels 2000 m in the first 100 s.

• It travels 10 000 m at constant speed.

A book of mass (m) falls freely from rest to the floor from the top of desk of height (h). What is the speed of the book upon striking the floor?

•  $\sqrt{2gh}$  

•  $2gh$  

•  $mgh$  

•  $mh$