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A baseball travelling with horizontal velocity V is caught by a glove. Which of the...

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bc090400375 | Student, Undergraduate | eNoter

Posted May 7, 2013 at 7:06 PM via web

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A baseball travelling with horizontal velocity V is caught by a glove. Which of the following statement is true?
a. The ball applies a greater force to the glove than the glove applies to the ball.
b. The ball applies a greater impulse to the ball than the ball applies to the glove
c. This is an example of an elastic collision
d. The padding of the glove reduces the force of the ball on the glove
e. The padding of the glove reduces the impulse of the ball on the glove
Also write the reason of your aboveselected choice as well. 

 

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tjbrewer | Elementary School Teacher | (Level 2) Associate Educator

Posted May 8, 2013 at 3:59 AM (Answer #1)

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This is an example of an elastic collision.  Since the ball does not bounce out of the glove (characteristic of an inelastic collision) the collision of the ball and the glove is elastic.  The ball's Kinetic energy is transferred to the glove, and then transforms into other forms.  Answers a and b are wrong because they don't provide for the conservation of energy.  The ball's force on the glove is equal to the glove's force on the ball (Newton's 3rd law).  Answers d and e are both wrong because the padding doesn't change anything besides the rate of the ball's acceleration and the pain of transferring the kinetic energy into the catcher's hand. 

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