The acceleration of the car is 6m / S2 when the car is in emergency braking on a flat road. If the car has to stop within 2S, what is the maximum speed of the car? If the car has to stop within 1.5s, how much is the acceleration of the car during braking? (1) what are the implied conditions for a car to "stop" in a certain process?

The acceleration of the car is 6m / S2 when the car is in emergency braking on a flat road. If the car has to stop within 2S, what is the maximum speed of the car? If the car has to stop within 1.5s, how much is the acceleration of the car during braking? (1) what are the implied conditions for a car to "stop" in a certain process?

A = △ V / T, △ v = at = 6m / S2 * 2S = 12m / s. △ v = V end - V beginning, V end = 0, because the brake is decelerating, so V beginning = 12m / s;
△v=12m/s,t=1.5s,a=△v/t=8m/s2;
It implies "decelerating motion, decelerating displacement required"
Typing is not easy,