A dynamite blast blows a heavy rock straight up with a launch velocityof 160 ft/sec (about 109 mph) . It reaches a height of s = 160t - 16t2 ftafter t sec. What are the velocity and speed of the rock when it is 256 ft above the ground on the way up? On the way down?
A dynamite blast blows a heavy rock straight up with a launch velocityof 160 ft/sec (about 109 mph) . It reaches a height of s = 160t - 16t2 ftafter t sec. What are the velocity and speed of the rock when it is 256 ft above the ground on the way up? On the way down?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.3: Rules For Addition
Problem 14P
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A dynamite blast blows a heavy rock straight up with a launch velocity
of 160 ft/sec (about 109 mph) . It reaches a height of s = 160t - 16t2 ft
after t sec. What are the velocity and speed of the rock when it is 256 ft above the ground on the
way up? On the way down?
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