1. The problem statement of my lab I have this physics lab where I have to find the maximum velocity and maximum acceleration of a high school student sprinting/running using carbon tape and a spark timer. Which I already did. Now I'm having trouble developing my sources of error section. I hope that I can get some insight or help that I would really appreciate. My one source of error that I have right now is: 1. The runner bounces during his/her run. This makes the carbon tape bounce up and down like making measurement defects in our lab. (I don't know if this is enough or even right). (can't think of anymore) 2. Relevant equations N/A 3. The attempt at a solution I was thinking of maybe the spark timer but the spark timer isn't really a good option I feel. Possible the tape and the friction could leave a discrepancy in my measurements as well?