1. The problem statement, all variables and given/known data I am just enquiring about car brakes, and figuring out how much force needs to be applied to stop a moving object (car). 2. Relevant equations 1457Kg – Curb weight of the car (overall mass) F = M x A 1457kg x 10mph = 14570 (Newtons) 1457kg x 20mph = 29140 N 1457kg x 30mph = 43710 N 1457kg x 40mph = 58280 N 1457kg x 50mph = 72850 N 1457kg x 60mph = 87420 N 1457kg x 70mph = 101990 N 3. The attempt at a solution So i've figured out the acceleration, but I need to find out, how much force needs to be applied to bring the car to a stand still using 312 Diameter brake disks. Would it be equal to or greater than the Acceleration? Thank you for any help you may offer!