Concept explainers
The kinetic energy as it leaves the racket.
Answer to Problem 54A
Explanation of Solution
Given:
The mass of the ball,
The force applied on the ball,
Time duration for which the force is applied on the object,
Since the ball starts at rest, thus its initial velocity,
Formula used:
Impulse on an object is equal to the change in momentum of an object,
where
And, the kinetic energy of an object of mass
Calculation:
Using the given values in above formula of Impulse, the velocity with the ball leaves the racket is,
Then, the kinetic energy of the ball as it leaves the racket is,
Conclusion:
Thus, the kinetic energy of the ball as it leaves the racket is
Chapter 11 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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