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Madhawa
Answers (1)
a) Work(total)= Final KE = (50*4+20*2) J = 240J b)Ek = 1/2 mv(final)^2 - 1/2 mv(initial)^2 v(final)^2 = Ek / 1/2 x 2 = 240 J / 1 = 240 V(final)= 15.5 m/s
