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A car begins from rest at t=0,& then accelerates along a straight track during the interval 0

neeraj pawar , 15 Years ago
Grade 12
anser 1 Answers
anandpal shekhawat

Last Activity: 15 Years ago

hi as V=2t^2 so, A=dV/dt= 4t as coin started moving at t=1s implies at this instant force acting on it has overcome the static friction & F=mA =4N at t=1s hence coeff. of friction = 4/g =0.4

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