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Physics / Sears and Zemansky's University Physics with Modern Physics 13 / Chapter 2 / Problem 21E

Sears and Zemansky's University Physics with Modern Physics | 13th Edition | ISBN: 9780321696861 | Authors: Hugh D. Young; Roger A. Freedman; A. Lewis Ford

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Answer: A Fast Pitch. The fastest measured pitched

Chapter 2, Problem 21E

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QUESTION:

Problem 21E

A Fast Pitch. The fastest measured pitched baseball left the pitcher’s hand at a speed of 45.0 m/s. If the pitcher was in contact with the ball over a distance of 1.50 m and produced constant acceleration, (a) what acceleration did he give the ball, and (b) how much time did it take him to pitch it?

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QUESTION:

Problem 21E

A Fast Pitch. The fastest measured pitched baseball left the pitcher’s hand at a speed of 45.0 m/s. If the pitcher was in contact with the ball over a distance of 1.50 m and produced constant acceleration, (a) what acceleration did he give the ball, and (b) how much time did it take him to pitch it?

ANSWER:

Solution 21E

Step 1 :

Let us consider the data given

Initial velocity of the baseball ${v}_{i}=\ 0\ m/s$

Final velocity of the baseball ${v}_{f}=\ 45.0\ m/s$

Distance travelled by pitcher with ball $d=1.50\ m\$

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