Answer An object with the initial velocity of (Vo=0.0 m/s) is dropped from a tal

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An object with the initial velocity of (Vo=0.0 m/s) is dropped from a tall building (h=750 meters tall). The object falls under the influence of the Earth's gravity with the acceleration of a = g = 9.8 m/s2. How soon (t =) the object will reach the ground after it was dropped ? What is the velocity (Vf) of the object just before it hits the ground? What would the object's velocity be halfway between the top of the building and the ground ( h(half) = h(building) / 2)? The mass of the object is m = 2 kg. HINT: use the energy conservation law.

Explanation / Answer

A)t=12.37 sec

B)V=121.37 m/s

C)85.7 m/s

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