Two slides have identical sizes and shapes but are made from different materials. The same object is allowed to slide down each of the slides. The object accelerates faster down the first slide than the second slide. Which statement is most likely to explain this result? Choose the correct answer.

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