Question

a car with a mass of 300000g is travelling at 40m/s. The driver sees a confused looking dog crossing the road and slows down to a halt in 20s. Calculate the force the brakes must provide for that to happen

Answer 1

Answer:

Please read the answer from the above picture.

Here I could not give the sq. sign, so I have sent the picture which I have done in another place.

Hope this will help you.