find the magnitude of the net force acting on the skier when(a) she is accelerat

Question

find the magnitude of the net force acting on the skier when(a) she is accelerated from rest to a speed of 11 m / s in 8.0 sand (b) she lets go of tow rope and glides to a halt in 21 s I view the answer this morning for 78P but it is not availablenow... what happened? Thanks. Kris find the magnitude of the net force acting on the skier when(a) she is accelerated from rest to a speed of 11 m / s in 8.0 sand (b) she lets go of tow rope and glides to a halt in 21 s I view the answer this morning for 78P but it is not availablenow... what happened? Thanks. Kris

Explanation / Answer

   we use the newtons second law of motion andequation of motion so that    F = m a       = m (v - vo) t (a)    when the skier accelerates from rest to a speedof 11 m / s in 8.0 s then the required force will be    F = (73 kg) [(11 m / s - 0) / 8.0 s]       = ........ N (b)    in this case we get    F = (73 kg) [(0 - 11 m / s) / 21.0s]       = ........ N       = ........ N

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