4. A ball is thrown vertically do the top of a tower and has an initial speed of 4 ms. If the ball hits the ground 2 seconds later, find: (a) the height of the tower (b) the speed with which the ball strikes the ground.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
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4. A ball is thrown vertically downwards from
the top of a tower and has an initial speed of
4 ms. If the ball hits the ground 2 seconds
later, find:
(a) the height of the tower
(b) the speed with which the ball strikes the
ground.
a) 27.6m, 20.4m/s b) 27.6m, 23.6m/s c) 32.3m, 12.3m/s d) 32.3m, 27.6m/s
Transcribed Image Text:4. A ball is thrown vertically downwards from the top of a tower and has an initial speed of 4 ms. If the ball hits the ground 2 seconds later, find: (a) the height of the tower (b) the speed with which the ball strikes the ground. a) 27.6m, 20.4m/s b) 27.6m, 23.6m/s c) 32.3m, 12.3m/s d) 32.3m, 27.6m/s
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