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21-03-2017
Physics

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A 20N force acts for 5.0 s on a 4.0 kg mass at rest. The magnitude of the velocity (in m/s) of the mass after the force acts is? Please help

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21-03-2017

acceleration a = F/m = 20/4 = 5 m/s^2

v = a x t = 5 × 5 =25 m/s

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