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3. A stone fell from a 45-m high chiff and hit the ground. What is the final
velocity with which it hits the ground?

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With solutions po:)

Sagot :

JENDUKIE83GO

Since the (vertical) velocity of the ball is given by (assuming g≈ constant)

v(t)=dsdt=v0−gt,

the speed of the object when hits the ground is the velocity at time t∗, where t∗ is the value of t when s(t)=sG=0 (if your reference system is placed at s=sG=0 for the ground).

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