A. it has dropped 14sin30° = 7m, so PE lost is mgh = 2*9.8*7 = ____ J
B. KE gained = PE lost, 1/2 mv^2 = PE lost. solve for v
A ball with a mass of 2kg rests on an incline with an angle of 30degrees .The ball is to be released to roll down the incline plane, neglecting all friction. Determine :
A. The loss in potential energy after it has rolled 14metres
B. The velocity after it has rolled 14metres
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