Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 6 - Think and Discuss: 98

Answer

In terms of momentum conservation: Since no external forces act in the horizontal direction, momentum is conserved. Because Freddy is falling vertically and has no horizontal momentum, the skateboard + Freddy, with its greater mass, should slow down after the frog lands. This is similar to the situation in Figure 6.14 on page 99. In terms of force: When Freddy lands, he speeds up to the right. This horizontal force is provided by the skateboard. By Newton's third law, Freddy exerts an equal force on the skateboard to the left, slowing it down.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.