Take this only if you can finish it within 2 hours and just answer the question without any steps. Please answer.

you only solve the below four questions. first review my image and answer my question, please answer these questions briefly

1. Did the results of this experiment verify the resultsF_net =ma? Explain.

2. Why is the mass inF_net =ma not just equal to the mass of the cart?

3. When calculating the force on the cart using mass times gravity, why is the mass of

the cart not included?

4. We assumed that the frictional effects were zero in this experiment. If they were

taken into account, how would the analysis change?

E ALL