(a) To determine An expression for magnitude of initial velocity. Explanation Write the equation of projectile trajectory. y = x tan θ − g 2 v 0 2 cos 2 θ x 2 (I) Here, y is the vertical distance covered, x is the horizontal distance covered, θ is the launch angle, v 0 is the initial velocity, and g is the acceleration due to gravity. The projectile rises to a maximum height h above the table and then lands on the floor a horizontal distance 2 h from the edge when it is launched from the edge of a table. Substitute, 2 h for x and y in the equation (I) and solve for v 0 . 2 h = 2 h tan θ − g 2 v 0 2 cos 2 θ 4 h 2 (b) To determine The value of launch angle.

4th Edition

ISBN: 9780135272992

Author: Wolfson

Publisher: VST

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Chapter 3, Problem 78P

(a)

To determine

An expression for magnitude of initial velocity.

(b)

To determine

The value of launch angle.

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Chapter 3, Problem 77P

Chapter 3, Problem 79P

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