Suppose a 49-n sled is resting on packed snow. the coefficient of kinetic friction is 0.11. if a person weighing 585 n sits on the sled, what force is needed to pull the sled across the snow at constant speed?

69.74 N

Explanation:

We are given that

Weight of sled=49 N

Coefficient of kinetic friction

Weight of person=585 N

Total weight==mg=49+585=634 N

We know that

Force needed to pull the sled across the snow at constant speed,F=Kinetic friction

Where N= Normal=mg

Hence, the force is needed  to pull the sled across the snow at constant speed=69.74 N

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