• :00Days
  • :00Hours
  • :00Mins
  • 00Seconds
A new era for learning is coming soonSign up for free
Log In Start studying!

Select your language

Suggested languages for you:
Answers without the blur. Sign up and see all textbooks for free! Illustration


Physics Principles with Applications
Found in: Page 170
Physics Principles with Applications

Physics Principles with Applications

Book edition 7th
Author(s) Douglas C. Giancoli
Pages 978 pages
ISBN 978-0321625922

Answers without the blur.

Just sign up for free and you're in.


Short Answer

The speed of a tennis ball on the return of a serve can be just as fast as the serve, even though the racket isn’t swung very fast. How can this be?

The speed of a tennis ball can be as fast as the serve on the return even if the racket is not swung very fast because of the momentum imparted by the racket on the ball during its return.

See the step by step solution

Step by Step Solution

Momentum conservation of the ball

The conservation of momentum principle states that the total momentum of an isolated system remains conserved. In this case, the served tennis ball returning from the little swung racket will take the momentum of the racket as the mass of the racket is more than the ball, and it will add to the velocity of the tennis ball.

Determine the energy and velocity of the rebounded tennis ball

When the tennis ball is served toward the other end, where the ball hits straight onto the slowly swung racket, it rebounds with the reverse velocity components. The small kinetic energy lost during the collision with the racket is compensated by the velocity imparted to the tennis ball by the racket. From the momentum conservation principle, a slowly moving racket with a larger mass than the ball will impart higher velocity to it. Therefore, the ball on return can be as fast as the serve.

Most popular questions for Physics Textbooks


Want to see more solutions like these?

Sign up for free to discover our expert answers
Get Started - It’s free

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.