Question

the car with a speed of 50km/h can be stopped by breaks at least 6m. what is the minimum stopping distance of a car if the car is moving at a speed of 100km/h

Answer 1

50km/h =6m
1km/h=6/50m
100km/h=6/50*100 m
=12m

Answer 2

2aS=v²-u²
here, v=0m/s
         u=50km/hr
that is=50×5/18
         =13.8m/s
         =19m/s approx.
2a6=o²-19²
12a=-361
a=-30m/s²
2×30×s=0²-27.7²
60s=767.29
s=12.78m