Need help proving Newton's second law?

I think you are asking how you could get a more accurate value for acceleration. Since your process involved a mechanical pulley, you are experiencing losses due to friction. Additionally, the wheels on your cart are experiencing friction with the cart and the table surface. In order to find an "accepted" value, you would have to work to make the process more frictionless. Put the sled on ice or use a material to make the rope/pulley more frictionless.

If you are just looking for the theoretical value, then take the initial and final velocity and the distance the cart traveled.

vf^2=vo^2+2ad

This will give the acceleration.

I hope this helps.

nicely, newtons first regulation states that each and every little thing in our galaxy has a gravity that's interested in a minimum of one yet another. the bigger the article, the greater suitable the gravitational allure. the 2nd regulation is the regulation of inertia: an merchandise will stay in action until acted upon by using an outdoors rigidity, and could stay at relax until acted upon. (rigidity equals mass x velocity) that's y the planets shop shifting in area, via fact there are not any outdoors forces that act upon them. his third regulation states that for each action, there is an equivalent and opposite reaction. the question must be asking if it proves the 2d regulation, as hostile to the 1st or third. whilst it says "proves" it asks if it helps the regulation. like if the lab is on how like a motor vehicle stops via fact the brakes act upon them and debris sluggish it down, then particular, it helps the belief.