A ball of 5kg is dropped from a tower of height 6 meters. What is its kinetic energy halfway through? (Use g = 9.8 m/s2)
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Explanation:
in accordance with the law of conservation of energy,
total energy remains constant
therefore
at point A, there is only potential energy.
which means at A total energy is equal to potential energy
similarly at B ,(i.e, at a height 3m) there is both KE and PE ,therefore total energy is the sum of KE and PE
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