A dragster and a driver together have mas 930.1 kg. the dragster, starting from rest, attains a speed of 25.8 m/s in .56 s. Find the average accel. of the dragster during ths time interval. What is the size of the average force on the dragster during this time interval? Answer in units of N. The driver has a mass of 74.9 kg. What horizontal force does the seat exert on the driver. I'm not even sure where to start.