A person is pushing a box of mass 5 kg horizontally across a floor using a constant force of 13 N. Friction is opposing this motion with a constant horizontal force of 3 N. If the box starts from rest, how far has it traveled after 4 s?
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A person is pushing a box of mass 5 kg horizontally across a floor using a constant force of 13 N. Friction is opposing this motion with a constant horizontal force of 3 N. If the box starts from rest, how far has it traveled after 4 s?
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- A 20 kg crate accelerates along a horizontal floor when it is pushed with a resultant force of 10 N parallel to the floor. How far will the crate move in 5s (starting from rest)?A man is trying to push a 75.0 kg rock across the ground by applying a constant force P at an angle θ = 27.5 ̊ below the horizontal. The coefficients of friction between the rock and the ground are μk = 0.430 and μs = 0.570. (a) If the rock is initially at rest, what force does the man need to apply to get it to start moving? (b) If the rock is already in motion, what force does he need to apply to get it accelerate at 2.75 m/s2?