A car is travelling at the legal maximum speed of 28 m s–1 on a single carriageway. The driver notices a hazard in the road ahead.
a) If the driver’s reaction time is 0.5 s and the car decelerates at 7 m s–2 during braking, calculate the stopping distance.
b) Calculate the size of the force required to decelerate the car if its total mass is 850 kg.
