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26 Nov 2019
A dynamite blast at a quarry launches a chunk of rock straightupward, and 2.2 s later it is rising at a speed of 16 m/s. Assumingair resistance has no effect on the rock, calculate its speed at(a) at launch and (b) 5.4 s after the launch.
(A)at launch (answer in m/s)
(B) at 5.4 s after launch (answer in m/s)
Please answer both a and b with explanations, thanks!
A dynamite blast at a quarry launches a chunk of rock straightupward, and 2.2 s later it is rising at a speed of 16 m/s. Assumingair resistance has no effect on the rock, calculate its speed at(a) at launch and (b) 5.4 s after the launch.
(A)at launch (answer in m/s)
(B) at 5.4 s after launch (answer in m/s)
Please answer both a and b with explanations, thanks!
Trinidad TremblayLv2
3 Jun 2019
