a 2.1*10^3 kg car starts from rest at the top of a driveway that is sloped at an angle of…

a 2.1*10^3 kg car starts from rest at the top of a driveway that is sloped at an angle of 20 degrees with the horizontal. an average friction force of 4*10^3 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 3.8 meters per second. what is the length of the driveway?