45. A rock is thrown off a cliff at an angle of 53° with respect to the horizontal. The cliff is 100 m high. The initial speed of the rock is 30 m/s. (a) How high above the edge of the cliff does the rock rise? (b) How far has it moved horizontally when it is at maximum altitude? (c) How long after the release does it hit the ground? (d) What is the range of the rock? (e) What are the horizontal and vertical positions of the rock relative to the edge of the cliff at t = 2.0s.t%3D4.0s, and t = 6.0 s? = 4.0 s. and t = 6,0 s?

45. A rock is thrown off a cliff at an angle of 53° with respect to the horizontal. The cliff is 100 m high. The initial speed of the rock is 30 m/s. (a) How high above the edge of the cliff does the rock rise? (b) How far has it moved horizontally when it is at maximum altitude? (c) How long after the release does it hit the ground? (d) What is the range of the rock? (e) What are the horizontal and vertical positions of the rock relative to the edge of the cliff at t = 2.0s.t%3D4.0s, and t = 6.0 s? = 4.0 s. and t = 6,0 s?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

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Concept explainers

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.

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Ch.4 Problem 45

45. A rock is thrown off a cliff at an angle of 53° with
respect to the horizontal. The cliff is 100 m high. The initial
speed of the rock is 30 m/s. (a) How high above the edge
of the cliff does the rock rise? (b) How far has it moved
horizontally when it is at maximum altitude? (c) How long
after the release does it hit the ground? (d) What is the
range of the rock? (e) What are the horizontal and vertical
positions of the rock relative to the edge of the cliff at t =
2.0s.t%3D4.0s, and t = 6.0 s?
= 4.0 s. and t = 6,0 s?

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