A rock is pushed from rest across a sheet of ice, accelerating at 2.0 m/s2over a distance of 20 cm. The rock then slides at a constant speed for 15.0 s until it reaches a rough section that causes the rock to stop in 5.5 s. (Assume two significant digits.)
What is the speed of the rock when it reaches the rough section?
At what rate does it slow down once it reaches the rough section?
What is the total distance that the rock slides?