A car with a speed of 25 m/s weighing 900 kg stops at a distance of 40 meters. Calculate the force exerted and the work done by the brakes.
a) Force exerted: 5625 N, Work done: 112500 J
b) Force exerted: 1125 N, Work done: 45000 J
c) Force exerted: 2250 N, Work done: 90000 J
d) Force exerted: 4500 N, Work done: 180000 J