A stone is dropped from the edge of a roof.Find the speed of the stone at 2s after the stone was dropped.
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A stone is dropped from the edge of a roof.Find the speed of the stone at 2s after the stone was dropped.
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In the given free fall,
u = 0 m/s
t = 2 sec
g = 10 m/s²
g = (v -u) /t
10 = (v - o) /2
10 = v/2
10 × 2 = v
v = 20 m/s