Chapter 3, Problem 55A

To determine

To Explain:The change in velocity automobile with respect to time on a rest track.

Explanation of Solution

Introduction:

The velocity of a car is measured with respect to time and the graph is drawn. The slope of velocity time graph gives acceleration of a car.

From graph, it is seen that velocity increases with time.Here, automobile starts from rest and to increase speed,driver has to shift gears.

For first time interval 0 to 5 s, the velocity increases rapidly. When driver shifts to second gear in the next time interval 5 to 12 s,initially velocity of car is lower then increases.Velocity is constant from 30 s.