Why is the following situation possible? Emily challenges her friend David to catch a $1 bill as follows. She holds the bill vertically as shown in figure P2.29 with the center of the bill between but not touching David's index finger and thumb. Without warning, Emily releases the bill. David catches the bill without moving his hands downwards. David reaction time is equal to the average human reaction time. Avg human reaction time is .2s. Dollar bill is approx 15.5cm in length.

University Physics Volume 1
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ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter3: Motion Along A Straight Line
Section: Chapter Questions
Problem 81P: A particle at rest leaves the origin with its velocity Increasing with time according to...
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Why is the following situation possible? 

Emily challenges her friend David to catch a $1 bill as follows. She holds the bill vertically as shown in figure P2.29 with the center of the bill between but not touching David's index finger and thumb. Without warning, Emily releases the bill. David catches the bill without moving his hands downwards. David reaction time is equal to the average human reaction time. 

Avg human reaction time is .2s. 

Dollar bill is approx 15.5cm in length. 

 

I need help explaining this. Thank you. 

m?
nly the bill vertically as shown in Figure P2.29, with the center
a) of the bill between but not touching David's index finger
and thumb. Without warning, Emily releases the bill. David
catches the bill without moving his hand downward. David's
reaction time is equal to the average human reaction time.
30. WA baseball is hit so that it travels straight upward after
being struck by the bat. A fan observes that it takes 3.00 s
for the ball to reach its maximum height. Find (a) the ball's
initial velocity and (b) the height it reaches.
tree limb wish.
oy
n-
le.
Transcribed Image Text:m? nly the bill vertically as shown in Figure P2.29, with the center a) of the bill between but not touching David's index finger and thumb. Without warning, Emily releases the bill. David catches the bill without moving his hand downward. David's reaction time is equal to the average human reaction time. 30. WA baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.00 s for the ball to reach its maximum height. Find (a) the ball's initial velocity and (b) the height it reaches. tree limb wish. oy n- le.
Note: In all problems in this section, ignore the effects of air
resistance.
28. In a classic clip on America's Funniest Home Videos, a sleeping
cat rolls gently off the top
of a warm TV set. Ignoring
air resistance, calculate the
position and velocity of the
cat after (a) 0.100 s, (b)
0.200 s, and (c) 0.300 s.
29. Why is the following situation
impossible? Emily challenges
her friend David to catch a
$1 bill as follows. She holds
Figure P2.29
ⒸCengage Learning/George Semple
37
38
Transcribed Image Text:Note: In all problems in this section, ignore the effects of air resistance. 28. In a classic clip on America's Funniest Home Videos, a sleeping cat rolls gently off the top of a warm TV set. Ignoring air resistance, calculate the position and velocity of the cat after (a) 0.100 s, (b) 0.200 s, and (c) 0.300 s. 29. Why is the following situation impossible? Emily challenges her friend David to catch a $1 bill as follows. She holds Figure P2.29 ⒸCengage Learning/George Semple 37 38
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