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QUESTION
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 -16t 2 after t...
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 after t seconds. what is the acceleration of the rock at any time t during its flight ( after the blast)?
