A body weighing 2 kg falls freely from a height of 8 meters. Determine the speed of the body at a height of 2 meters.
| December 29, 2020 | education
To determine the speed at height h2, we use the energy conservation law:
mgh1 = mgh2 = mv ^ 2/2
V = sqrt (2gh1-2gh2) = 11m / s
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