A car moving at 50 km/h skids 20 m with locked brakes. How far will the car skid with locked brakes if it is traveling at 150 km/h?

Question

Quizplus · Accepted Answer

The distance a car skids with locked brakes is directly proportional to the square of its speed. If tripling the speed from 50 km/h to 150 km/h, the skidding distance increases by a factor of $3^2 = 9$. Therefore, the new skidding distance is $20 m \times 9 = 180 m$.

A Car Moving at 50 Km/h Skids 20 M with Locked