Answer:
15 m
Step-by-step explanation:
The distance travelled by the driver before they put their foot on the brakes can be derived from the stopping distance and the braking distance of the car.
d = stopping distance - braking distance
Stopping distance = 50 m
Braking distance = 35 m
d = 50 - 35 m
d = 15 m
The distance travelled by the driver before they put their foot on the brakes is 15 m