E1t6 Preap Physics Numbers 11-15 2016

1. 11. The speed of a car will increase if the car's

A. initial velocity is positive and its acceleration is zero.

B. initial velocity is positive and its acceleration is positive.

C. initial velocity is positive and its acceleration is negative.

D. initial velocity is negative and its acceleration is positive.

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E1t6 Preap Physics Numbers 11-15 2016 - Quiz

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2. 15. Acceleration is defined as

A. rate of displacement.

B. the rate of change of displacement.

C. the change in velocity.

D. the rate of change of velocity.

3. 13. Four people are riding the bicycles along different paths. Bicyclist 1 is traveling east at a constant speed of 10 mph. Bicyclist 2 is traveling north at a constant speed of 5 mph. Bicyclist 3 is traveling along a circular path at a constant speed of 7 mph. Bicyclist 4 is traveling along a radius of Bicyclist 3's circular path at a constant speed of 20 mph. Which of the bicyclists is accelerating along his/her path?

A. Bicyclist 1

B. Bicyclist 2

C. Bicyclist 3

D. Bicyclist 4