Chapter 8, Problem 2A

a. Which has the greater mass, a heavy truck at rest or a roiling Skateboard?

b. Which has greater momentum?

To determine

The one which has greater mass out of a heavy truck at a rest and a rolling skateboard.

Explanation of Solution

Introduction:

Mass is amount of matter contained in the object. Mass of an object is independent of velocity in general (except when an object has relativistic velocity).

Mass of an object remains constant. The truck is at rest, its mass does not change.The mass of skateboard also remains constant while rolling.

Conclusion:

Mass of truck is larger than the moving skateboard.