   Chapter 2.1, Problem 2.2QQ

Chapter
Section
Textbook Problem

True or False? (a) A car must always have an acceleration in the same direction as its velocity. (b) It’s possible for a slowing car to have a positive acceleration. (c) An object with constant nonzero acceleration can never stop and remain at rest.

(a)

To determine

To say True or False: It is defined as the change in velocity with time. The direction of acceleration is the direction of the change in velocity.

Explanation

If the velocity is increasing then the car has a positive acceleration. If the velocity is decreasing then the car has a negative acceleration. The positive acceleration will be in the direction of the velocity. The negative acceleration is in opposite direction of the velocity...

(b)

To determine

To say True or False: It is defined as the rate of change of velocity.

(c)

To determine

To say True or False: It is defined as the rate of change of velocity. Non-zero acceleration keeps the object in motion.

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