OL SpitFire
New member
A car travelling at 120km/hr (33.3m/s) brakes to a stop over 25 m, if the driver is 60kg, what is the stopping force.
It says to use formula Fd=1/2mv^2-1/2mu^2 where v is final and u is initial speed
so is the final speed 0?
then is the answer 432000 J?
It says to use formula Fd=1/2mv^2-1/2mu^2 where v is final and u is initial speed
so is the final speed 0?
then is the answer 432000 J?