A child on a sled is sliding at a speed of 4m/s across level ice. if the total mass of the sled + child is 50kg and the sled has steel runners, how long will it take the sled to come to a halt? what force will be required to start it moving again? If this force continues to be applied at what rate would the sled accelerate?
1 answer
You seem to be missing coefficients of friction.