Physics
posted by David .
. A stone is dropped from the top of a building that is 500m high. Disregarding air resistance how long does it take the stone to reach the ground?

Use kinematics equation:
Δx = vi(t) + (1/2)at²
vi=0
g=9.8
500=(1/2)(9.8)t²
t=√(2(500)/(9.8))
=10.1 s (approximately)
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