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Kaylis [27]
3 years ago
10

NEED ANSWER ASAP PLEASE!!!!!!!

Physics
1 answer:
Usimov [2.4K]3 years ago
7 0

In both questions, the objects are falling from rest so their final velocities after time t will be given by

v_f=v_i+at=at

where a is the acceleration due to gravity given. Note that I take the downward direction to be positive.

23.

v_f=\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)(7\,\mathrm s)\implies v_f=68.6\,\dfrac{\mathrm m}{\mathrm s}

24.

49\,\dfrac{\mathrm m}{\mathrm s}=\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)t\implies t=5.0\,\mathrm s

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