A stone is thrown in downward direction with initial speed 8m/sfrom a height 25 meter.
(1) Find the time it takes to reach ground
(2) The speed with which it strikes the ground
(3) Will the time of fall and velocity be constant if we drop a heavier stone (say 100 Kg?)
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Near the surface of the Earth, an object in free fall in a vacuum will accelerate at approximately 9.8 m/s2, independent of its mass. With air resistance acting on an object that has been dropped, the object will eventually reach a terminal velocity, which is around 53 m/s (190 km/h or 118 mph) for a human skydiver.
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