College Physics
Solutions
College Physics
Emily challenges her husband, David, to catch a $1 bill as follows. She holds the bill vertically as in Figure P2.67, with the center of the bill between David's index finger and thumb. David must catch the bill after Emily releases it without moving his hand downward. If his reaction time is 0.2 s, will he succeed? Explain your reasoning. (This challenge is a good trick you might want to try with your friends.)
Figure P2.67
Given Info:
The initial velocity of the bill is
The time of reaction is
The acceleration of the bill is
The formula used to calculate the displacement of the bill  is,
Substitute
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