Two cables are pulling on a box, sliding it across the (frictionless) floor. One cable
pulls to the east with a force of 3N, the other pulls to the north with a force of 4N.
If the box has a mass of 0.5kg, what is the net force and acceleration acting on this
box?

1) Net force is 7N, acceleration is 14 m/s/s

2) Net force is 7N, accelerations is 3.5 m/s/s

3) Net force is 5N, acceleration is 10 m/s/s

4)Net force is 5N, acceleration is 2.5 m/s/s