M4/1 FINAL TEST , MOTION

A dog walks from+4 m to +2 m. Which of the following statements is
true about the dog’s motion?

• 
• 
• 
• 

For the five time intervals shown, during how many intervals does the
dog have the same average velocity?

• 0

• 2

• 1

• 3

Describe the dog’s motion when it is at 1.0 m

The jogger is at rest during which interval?

• AB

• DE

• BC

• EF

A cat walking at 0.25 m/s sees a mouse and accelerates uniformly at 0.40 m/s2
for 3.0 s. What is the cat’s displacement during this time?

Centripetal acceleration must involve a change in

• an object’s tangential speed.
  

• an object’s velocity
  

• both an object’s speed and direction.
  

• the radius of an object’s circular motion
  

Which of the following is the correct equation for centripetal
acceleration?

• 
• 
• 
• 

A tether ball tied to a pole by a rope swings
in a circular path with a centripetal
acceleration of 2.7 m/s2. If the ball has a
tangential speed of 2.0 m/s, what is the
diameter of the circular path in which it
travels?

A man swings a bucket on a 120-cm rope
with a tangential speed of 4.5 m/s. If the
magnitude of the centripetal force is
25 N, what is the bucket’s mass?