A ball is given a downward velocity of 8 ft/sec from a height of 120 ft above the ground. (a) When will it reach the ground and with what velocity will it strike the ground? 2.5 sec, 88 ft/sec (b) How much lower must one stand in order to drop a ball and have it reach the ground at the same as the first ball? 20 ft (c) With what velocity will the second ball strike the ground? 80 ft/sec (d) What is the significance of the negative sign of -3 seconds obtained in (a)? Hint. Substitute t = -3 in your velocity equation. Then solve this problem. If a ball is thrown upward from the ground with a velocity of 88 ft/sec, how high will it go; at what height will its velocity be 8 ft/sec downward; when will it reach this height and velocity?

A ball is given a downward velocity of 8 ft/sec from a height of 120 ft above the ground. (a) When will it reach the ground and with what velocity will it strike the ground? 2.5 sec, 88 ft/sec (b) How much lower must one stand in order to drop a ball and have it reach the ground at the same as the first ball? 20 ft (c) With what velocity will the second ball strike the ground? 80 ft/sec (d) What is the significance of the negative sign of -3 seconds obtained in (a)? Hint. Substitute t = -3 in your velocity equation. Then solve this problem. If a ball is thrown upward from the ground with a velocity of 88 ft/sec, how high will it go; at what height will its velocity be 8 ft/sec downward; when will it reach this height and velocity?

Name: A ball is given a downward velocity of 8 ft/sec from a height of 120
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Description: A ball is given a downward velocity of 8 ft/sec from a height of 120 ft above the ground.(a) When will it reach the ground and with what velocity will it strike the ground? 2.5 sec, 88 ft/sec(b) How much lower must one stand in order to drop a ball

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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