#Physics (simple) (mechanics)

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azure agate
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How much time does a stone take to reach on the surface of the earth drop from the height of 20m and what will be the acceleration due to gravity after 3s.

g = 10 m/s²

t = 2s from the first part of the question.

How do I calculate g = 0 after 3s (as the stone already reached the ground at 2s)

remote veldtBOT
#
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lucid mortar
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so your right about the t = 2s

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The stone reaches the ground at t=2s, so at t=3s, it is not in free fall. once the stone touches the ground, it no longer accelerates because the ground exerts a normal force that cancels out the gravitational force.
so the acceleration due to gravity after t=3s is zero because the stone is stationary and not experiencing any motion under gravity.

lucid mortar
azure agate
grave sonnet
azure agate
#

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limpid plank
#

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lime cometBOT
#

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wet carbon
lucid mortar
unreal cobaltBOT
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azure agate
#

+close

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