Question

what force is required to bring a 900kg car to rest from speed of 120kmph within distance of 50m​

Answer 1

Answer:

m=900kg

v=120×5/18=100/3m/s

s=50m

f=?

v²=2as

a=v²/2s

a=100/9 m/s²

f=ma

f=900×100/9

f=10,000N