Sledding A sled with a mass of 80.0 kg is pulled along flat, snow-covered ground. The static friction coefficient is 0.30, and the kinetic friction coefficient is 0.10. a. What does the sled weigh? b. What force will be needed to start the sled moving? c. What force is needed to keep the sled moving at a constant velocity? d. Once moving, what total force must be applied to the sled to accelerate it at 3.0 m/s??

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A 10-kg wooden box rests on a ramp that is lying flat. The coefficient of static friction is 0.50, and the coefficient of kinetic friction is 0.30. What is the friction force between the box and ramp if a 30 N horizontal force is applied to the box? A.50 N B.20 N C.0 N D.30 N

A person exerts a force of 120 NN on a rope that pulls a sled across a very smooth horizontal surface. The rope is oriented 37⁰0 above the horizontal. The sled has a total mass of 50 kgkg. The sled starts at rest and moves for 10 mm. Select all the quantities that can be determined using the given information. A. Determine the acceleration of the sled. B. Determine the normal force exerted by the surface on the sled. C. Determine the time taken for the sled to move 10 m. D. Determine the speed of the sled after moving for 10 m. F. Check all that apply. acceleration of the sled normal force exerted by the surface on the sled mass of the person time taken for the sled to move 10 mm speed of the sled after moving 10 mm