College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter3: Two-dimensional Kinematics
Section: Chapter Questions
Problem 28PE: (a) A daredevil is attempting to jump his motorcycle over a line of buses parked end to end by...
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Need help with c) please.

a) is 5.10m

b) is 1.02s

Keeping your sign conventions for direction is very important.all velocity directed down must be
negative, and all velocity directed up must be positive.
3. A man is standing on the edge of a 20.0 m high cliff. He throws a rock vertically with an initial
velocity of 10.0 m/s.
a)
How high does the rock go? (Remember that at its max height v = 0 m/s)
b)
How long does it take to reach its max height?
c)
How long does it take the rock to reach the ground at the bottom of the cliff?
Transcribed Image Text:Keeping your sign conventions for direction is very important.all velocity directed down must be negative, and all velocity directed up must be positive. 3. A man is standing on the edge of a 20.0 m high cliff. He throws a rock vertically with an initial velocity of 10.0 m/s. a) How high does the rock go? (Remember that at its max height v = 0 m/s) b) How long does it take to reach its max height? c) How long does it take the rock to reach the ground at the bottom of the cliff?
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