Answer:
where F is the friction force that is the same for both boxes
Step-by-step explanation:
So the same boxes at the same mass m would create a same friction force, let this force be F. The net force in the first and 2nd cases would be
- 1st case: F1 - F
- 2nd case F2 - F
According to Newton 2nd law, this net would make acceleration
- 1st case

- 2nd case

Since



