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A well-thrown ball is caught in a well-padded mitt. If the
Chapter 2, Problem 21(choose chapter or problem)
Problem 21PE
A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is 2.10×104 m/s2 , and 1.85 ms (1 ms = 10−3 s) elapses from the time the ball first touches the mitt until it stops, what was the initial velocity of the ball?
Questions & Answers
QUESTION:
Problem 21PE
A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is 2.10×104 m/s2 , and 1.85 ms (1 ms = 10−3 s) elapses from the time the ball first touches the mitt until it stops, what was the initial velocity of the ball?
ANSWER:
Solution 21PE
We need to calculate the initial velocity of the ball.
Step 1
The deceleration of the ball
Time for the ball to stop
Final velocity of the ball (as it stops)
We need to calculate the initial velocity, let it be .