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26 Nov 2019
A dynamite blast at a quarry launches a rock straight upward, and 2.2 s later it is rising at a rate of 15 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)5.7 s after launch.
A dynamite blast at a quarry launches a rock straight upward, and 2.2 s later it is rising at a rate of 15 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)5.7 s after launch.
Jarrod RobelLv2
3 Jun 2019