Question

A car traveling at 18.0 m/sm/s skids to a stop in 28.5 mm from the point where the brakes were applied.

In what distance would the car have stopped had it been going 59.4 m/sm/s , if tires and road condition were unchanged (i.e. if the acceleration were the same)?

Answer 1

s=28.5 × 10-3 m

u = 18 m/s

Acceleration can be found using Equation of motion

Final velocity v = 0,

If u = 59.4 m/s

Distance covered by the car before coming to halt will be

Distance covered by car before stopping