A projectile is fired into air from the top of a cliff, with an initial speed vo = 30 m/s at an angle of 60° above the horizontal. The projectile hits the ground after a time t = 6s. (g = 10m/s?) The height h of the cliff is approximately: %3D %3D V= 30 m/s A. 131 m 60° B. 90 m C. 24 m D. 63 m E. 112 m Cliff h=? =6s

College Physics
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Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 39AP: A rocket is launched at an angle of 53.0 above the horizontal with an initial speed of 100. m/s. The...
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A projectile is fired into air from the top of a cliff, with an initial speed vo = 30 m/s at
an angle of 60° above the horizontal. The projectile hits
the ground after a time t = 6s. (g = 10m/s?)
The height h of the cliff is approximately:
- 30 m/s
A. 131 m
60°
B. 90 m
C. 24 m
D. 63 m
Cliff
h=?
E 112 m
7 =6s
A care package is released from an air plane traveling horizontally at a height of 720 m above the
ground with a velocity of 115 m/s (g = 10m/s)
The package s speed v just before if
strikes the ground is.
A. 115 ms
B. 120 m s
C 166 2 mS
D. 152 4 ms
173.5 mis
720 m
Page
Transcribed Image Text:A projectile is fired into air from the top of a cliff, with an initial speed vo = 30 m/s at an angle of 60° above the horizontal. The projectile hits the ground after a time t = 6s. (g = 10m/s?) The height h of the cliff is approximately: - 30 m/s A. 131 m 60° B. 90 m C. 24 m D. 63 m Cliff h=? E 112 m 7 =6s A care package is released from an air plane traveling horizontally at a height of 720 m above the ground with a velocity of 115 m/s (g = 10m/s) The package s speed v just before if strikes the ground is. A. 115 ms B. 120 m s C 166 2 mS D. 152 4 ms 173.5 mis 720 m Page
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