Recent content by XphysicsblurX

Yes, I know the answer is 4000N, and the solution is there, I got the answer wrong in my test paper, I nned to know why the correct answer is 4000N. The given solution was: 20 m/s divided by 5 seconds = 4m/s2 Force= ma= 1000 X 4 = 4000N I need someone to explain step-by-step...

I need help with my Physics Homework! A Car of mass 1000kg decelerates from 20m/s2 to rest in a time of 5 seconds. Calculate the braking force of the car, assuming that there is no friction. Ans: 20 m/s2 / 5 seconds = 4m/s2 Force= ma= 1000 * 4 = 4000N Can anyone explain this to me?