Hydroplaning is when a. your car glides over shallow water b. you engage your brakes over the water and drift c. your wheels lose traction on the road and your car skids d. you utilize water driving techniques in the rain to drift

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move