A particle of mass `0.2kg` is moving in one dimension under a force that delivers a constant power `0.5W` to the particle. If the initial speed (in m/s) of the particle is zero, the speed (in `ms^-1`) after `5s` is

Answer

5

Explanation

Power `= (dW)/(dt) implies W = 0.5 xx 5 = 2.5 = KE_(f) - KE_(i) , " "2.5 = M/2 (v_f^2 - v_i^2) implies v_f = 5`.