1 and 2D Kinematics Review Penner

A car drives at a constant 20 m/s around a circular track once every 10 seconds. The radius of the track is

• 200 m

• 2 m

• 31.8 m

• 318 m

How far does the object go during phase A?

• 37.5 m

• 50 m

• 75 m

• 3 m

This is the position/time graph of the motion of a particle. Of the four points P, Q, R, and S, the velocity is most positive at

• P

• Q

• R

• S

A space-ship makes a round-trip to a star 7.5 light-years away traveling at 75% the speed of light. The trip takes...

• 2 years

• 20 years

• 6.7e-8 s

• 6.7e-8 years

The diagram undergoing negative acceleration is

• A

• B

• C

• D

You toss a ball straight upward, in the positive direction. The ball falls freely under the influence of gravity.

At the highest point in the ball’s motion,

• its velocity is zero and its acceleration is zero.

• its velocity is zero and its acceleration is positive (upward).

• its velocity is zero and its acceleration is negative (downward).

• its velocity is positive (upward) and its acceleration is zero.

• its velocity is positive (upward) and its acceleration is zero.

Calculate the acceleration for segment A.

• 2 m/s²

• 2 m/s

• -2 m/s²

• 0 m/s²

A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s², what is its velocity after 2 s?

• 0 m/s

• 0.5 m/s

• 1 m/s

• 3 m/s

Which of the following velocity/time graphs best represents this position/time graph?

• 
• 
• 
• 
• 

At what point is v_y= 0 m/s?

• A

• B

• C

• D

• None of these points