I know average velocity is V = displacement/time, but how do you find this with 3 different sets of numbers?? ---- A car travels along a straight stretch of road. It proceeds for 13.9 mi at 56 mi/h, then 29 mi at 42mi/h, and finally 32.2 mi at 35.2 mi/h. What is the car's average velocity during the entire trip? Answer in units of mi/h.