Specialist part · #3652 · 3 pts
Which of the following factors has direct influence on the stopping distance of the passenger car?
aThe weight of the passenger.
bThe speed and the condition of the road surface.
cThe weight of the vehicle.
Why?
Higher speed increases both the distance travelled during reaction time and the braking distance. The road surface affects tyre grip, so stopping quickly is harder on a slippery road. B is correct, while the mass of a passenger or the vehicle alone does not determine stopping distance.