A dynamite blast at a quarry launches a rock straight

Reference no: EM13609007

A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 14 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.4 s after launch.

Reference no: EM13609007

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