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(c) 1 Erga)ass ókg is under a force which causes2displacement in it given by S=-metres where t is timeThe work done by the force in 2 seconds is(a) 12J42(b) 9J(d) 3J(c) 6J |
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Answer» After 2sS = t^2/4S = 1m v = dS/dtv = 2t/4v = t/2 a = dv/dta = 1/2 m/s^2 F = maF = 6*1/2F = 3N W = F * SW = 3 * 1W = 3J |
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