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Agirl pulls her younger brother on a sled along a flat sidewalk (the total mass of the sled is 30kg). a frictional force of 50n opposes the pull. when moving, the girl pulls on the sled with a force of 150n at an angle of 30 degrees.
how much time will it take for the sled to travel 50?
what is the normal force?
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Agirl pulls her younger brother on a sled along a flat sidewalk (the total mass of the sled is 30kg)...
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