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Shown is a person stationary in their frame of reference watching a moving cart. On the moving cart is a second person who remains stationary on the cart in their frame of reference. The cart is moving with $\text{velocity} = v$. The person on the cart throws a baseball with some velocity in the frame of reference of the cart.

Which of the following values is the velocity of the baseball in the frame of reference of the cart, such that the observed velocity of the baseball in the frame of reference of the stationary person is zero?

Created for Albert.io. Copyright 2016. All rights reserved

A

${ v }_{ baseball }=v$

B

${ v }_{ baseball }=0$

C

${ v }_{ baseball }=-0.5v$

D

${ v }_{ baseball }=-v$

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