If motor M exerts a force of (F = (10t^2+100)N) on the cable, where t is in seconds, determine the velocity of the (25 kg) crate when (t = 4s) . The coefficients of static and kinetic friction between the crate and the plane are (mu_{s} = 0.3) and 0.25 (mu_{k} = 0.25) . The crate is initially at rest.