1. A car changes velocity from 25m/s to 8.0m/s. If the average force applied to the brakes is 16000N, how far does the 2300kg car go in this time? 2. How much work is done if a 75kg runner speeds up from 1.2 m/s to 4.0m/s in 1.7s? How much extra work is done if there is a force of friction against the runner of 26N?