Please answer 19-21 as they are all the same question

019 (part 1 of 3) 10.0 points You are driving at the speed of 31.4 m/s (70.2548 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes and begins to slow down with the largest deceleration possible without skid- ding. Considering an average human reaction, you press your brakes 0.417 s later. You also brake and decelerate as rapidly as possible without skidding. Assume that the coefficient of static friction is 0.884 between both cars' wheels and the road. The acceleration of gravity is 9.8 m/s. Calculate the acceleration of the car in front of you when it brakes. Answer in units of m/s2. 020 (part 2 of 3) 10.0 points Calculate the braking distance for the car in front of you. Answer in units of m. 021 (part 3 of 3) 10.0 points Find the minimum safe distance at which you can follow the car in front of you and avoid hitting it (in the case of emergency braking described here). Answer in units of m