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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman
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A man stands on the roof of a 15.0-m-tall building and

Chapter 6, Problem 21E

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QUESTION:

A man stands on the roof of a 15.0-m-tall building and throws a rock with a speed of 30.0 m/s at an angle of 33.0o above the horizontal. Ignore air resistance. Calculate (a) the maximum height above the roof that the rock reaches; (b) the speed of the rock just before it strikes the ground; and (c) the horizontal range from the base of the building to the point where the rock strikes the ground. (d) Draw x-t, y-t, vx-t, and vy-t graphs for the motion.

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QUESTION:

A man stands on the roof of a 15.0-m-tall building and throws a rock with a speed of 30.0 m/s at an angle of 33.0o above the horizontal. Ignore air resistance. Calculate (a) the maximum height above the roof that the rock reaches; (b) the speed of the rock just before it strikes the ground; and (c) the horizontal range from the base of the building to the point where the rock strikes the ground. (d) Draw x-t, y-t, vx-t, and vy-t graphs for the motion.

ANSWER:

Solution 21 E Step 1 : In this question, we need to find the Maximum height reached by the stone y 0 The speed of rock vertically v y Horizontal range from base of the building to stone x 0 Let us consider the data given Height of the building y = 15 m Initial speed of the rock v =i30 m/s Angle above horizontal = 33 0

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