A ball is thrown with an initial speed of 20 ?/? from one end of a horizontal platform with a length of 48 ? and a height of 32 ? at angle of 37° to the the horizontal. At the same time a man who is standing on the ground starts from rest and moves with a constant acceleration of ? (see Figure). (a)Find the time of flight of the ball (b) What should be the acceleration of the man so that he can hold the ball before it falls? cos53=sin37=0.6 cos37=sin53=0.8 g=9.8 m/s2
A ball is thrown with an initial speed of 20 ?/? from one end of a horizontal platform with a length of 48 ? and a height of 32 ? at angle of 37° to the the horizontal. At the same time a man who is standing on the ground starts from rest and moves with a constant acceleration of ? (see Figure). (a)Find the time of flight of the ball (b) What should be the acceleration of the man so that he can hold the ball before it falls? cos53=sin37=0.6 cos37=sin53=0.8 g=9.8 m/s2
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 7OQ: A projectile is launched on the Earth with a certain initial velocity and moves without air...
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A ball is thrown with an initial speed of 20 ?/? from one end of a horizontal platform with a length of 48 ? and a height of 32 ? at angle of 37° to the the horizontal. At the same time a man who is standing on the ground starts from rest and moves with a constant acceleration of ? (see Figure).
(a)Find the time of flight of the ball
(b) What should be the acceleration of the man so that he can hold the ball before it falls?
cos53=sin37=0.6 cos37=sin53=0.8 g=9.8 m/s2
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