1. The problem statement, all variables and given/known data A 70-kilogram cyclist develops 210 watts of power while pedaling at a constant velocity of 7 m/s east. What average force is exerted eastward on the bicycle to maintain this constant speed? m = 70kg W = 210 J V = 7 m/s F = ? 2. Relevant equations 3. The attempt at a solution The way I did this problem was by looking at my units. I'm trying to find force (newtons) when given mass (kilograms), watts (Joules per second), and velocity (meters per second). I know that watts in joules per second is equal to newtons times meters per second, which in turn, becomes newtons times velocity. In the end, I use watts equals newtons times velocity and solve for newtons, dividing watts by velocity (in this case, 210 watts divided by 7 meters per second). I end up with 30 N. Is this a correct way of doing the problem? Is there another way to do it with an equation and number crunching?