At one instant, a 17.5-kg sled is moving over a horizontal surface of snow at 3.50 m/s. After 8.75 s has elapsed, the sled stops. Use momentum approach to find the average friction force acting on the sled while it was moving

Question

At one instant, a 17.5-kg sled is moving over a horizontal surface of snow at 3.50 m/s. After 8.75 s has  elapsed, the sled stops. Use momentum approach to find the average friction force acting on the sled while it was moving

lgbasallote · Answer

can someone explain to me what that means?

lgbasallote · Answer

@TuringTest i heard you were good with Physics?

mathslover · Answer

wait please

lgbasallote · Answer

sure

mathslover · Answer

|dw:1346978179656:dw|

are these right?