# Physics HELP!!

posted by
**Angie**
.

two horizontal forces F1 and F2, acting on an object of mass 1.11kg. The magnitude of F1 is 27.56N. The object moves strictly along the horizontal x-axis, which we choose as positive to the right. Find the magnitude of F2 if the object has a horizontal acceleration of 8.4m/s^2.

b). What is the magnitude of F2 if the object has a horizontal acceleration of 0m/s^2?

c). What is the magnitude of F2 if the object has a horizontal acceleration of -9.30m/s^2?