In a parking garage, both cars were parked in their own respective spaces, one behind the other. The blue car's driver accidently pressed the accelerator pad instead of the brake pad, thus backing into the green car. The force applied by the blue car was 15N and the mass of the blue car is 1500kg. What was the rate of acceleration of the blue car backing into the green car?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?