What was the average force applied to the box in the direction of motion?

[kooaznboi1088]

A 7 kg box increases its speed form 2 to 4 m/s over a horizontal distance of 5 meters. coefficient fo kinetic friction is .1. what was the average force applied tothe box int he direction of the motion?

 

[Hootenanny]

Could you show some of your working or ideas?