a car of mass 3000kg moving at 20m/s is suddenly brought to a stop when a deer crosses the road. if a braking force of 300,000 is needed to bring the car to a stop, what was the duration of the force?

Answer 1

force*brakingtime=mass*changevelocity

solve for braking time.

Answer 2

a car of mass 1200 kg accelerates steadily from rest down an steady incline at 15 degree to the horizontal . if the slope is 100 m long , calculate the work out the loss potential energy as the car moves down the slope