iPad 757 p.m. webassign net Sign In PH101 Homework Assignment 2 Serway, Physics

Question

iPad 757 p.m. webassign net Sign In PH101 Homework Assignment 2 Serway, Physics My Notes Ask Your Teacher Emily challenges her husband, David, to catch a $1 bill as follows. She holds the bill vertically as in the figure shown below, 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? O Yes O No Explain your reasoning. (This challenge is a good trick you might want to try with your friends.) This answer has not been graded yet. Need Help? Read chat About HI

Explanation / Answer

as emily drops the note.. it free falls due to gravity

S = 0.5 g t2

when t= 0.2 sec

s= 0.5 * 9.8 * 0.2 * 0.2 = 0.196 m = 19.6 cm

clearly the note has fallen down by more than its length in 0.2 sec

as her husbands reaction is 0.2 sec he will not be able to catch the bill

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