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How long will it take a force of 10N to stop a mass of 2.5kg which is moving at 20 m/s? |
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Answer» Mass of the body = 2.5kg Initial velocity, u = 20 m/s Final velocity, v = 0 m/s Force, F = 10N Acceleration, a = F/m = 10/2.5 = 4 m/s2 Since, v < u, negative sign is used = -4 m/s2 Time, t = (v-u)/a = 5s |
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