At one instant, a 17.0-kg sled is moving over a horizontal surface of snow at 4.10 m/s. after 6.15 s has elapsed, the sled stops. use a momentum approach to find the magnitude of the average friction force acting on the sled while it was moving.

force = 11.33

Explanation:

given data:

sled mass = 17.0 kg

inital velocity (U) = 4.10 m/s

elapsed time (T) 6.15 s

final velocity (V) = 0

final momentum P2 = 0

Initial momentum of sledge is

from newton second law of motion

Kgm/s^2

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the answer is b, have negligible mass