an object of mass 5 kg is dropped from height of 10m find its k.e , when it is half way down
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mgh=5×10×10=500m/s or 5×9.8×10=490m/s
himanshukapraw:
it is wrong because its been asked that to find its ke when it has covered half distance
and energy is in joules
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in the law of conservation of energy the object in half the way half p.e converts to k.e
so it's k.e is 2 1/2
so it's k.e is 2 1/2
it is wrong
its answer is 250 j
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