A 20 kg bike accelerates at 10 m/s2. With what force was the person pedaling if friction
exerted a force of 100N?

Sample Response: How can we change the speed of a toy car on a racetrack to describe the car’s motion? or This is something you can test in the experiment, by having different cars with different sized wheels. In this way, you can track how fast each car goes, and determine whether or not the wheel size increases speed, decreases speed, or has no effect on speed. (I just did this. They are both correct)