I am having problems on conversion factors. I don't even know where to begin with my problems. I know which formulas to use I just don't know what to do after that. For ex I am working on this prob: A Grand Prix racer completes a 500 km race in 2hr 15min. What is the average speed of the car in km per hr and meters per sec? Like I said I know what formula to use but what are the steps to convert? I keep getting stuck on how to start. Thanks.