1. A 53 newton horizontal force pushes a 5.0 kg mass sitting on a horizontal surface. Additionally, the horizontal surface exerts a 30 newton frictional force on the mass. What is the acceleration of the mass?
2. A 2200 kg car is moving at a speed of 38.0 m/s. Determine the stopping distance(in meters) if the brakes supply a force of 3500 newtons.