Chapter 2.3, Problem 25R

To determine

The change in the acceleration of a bicycle while riding from home to the store.

Explanation of Solution

Introduction:

Acceleration is defined as the rate of change of velocity. This indicates how the speed of a body is being changed, but it does not happen always. If an object is moving in a circular trajectory with a constant speed, then also it is accelerating throughout the trajectory as the direction of its velocity is changing.

While a person goes to store from home, the acceleration starts changing at each instant. Sometimes acceleration will increase and sometimes it will decrease. This depends on the overall speed of a person at a particular instant. Constant acceleration does not occur because a person will constantly accelerate and as a result, he will not reach the store. A decrease in speed also causes an acceleration. When a person reaches the store, only the average velocity can be calculated. Thus, the changing acceleration can be analyzed.

Conclusion:

Therefore, the acceleration of a body changes at every instant.