A 10 N force pushes a rock due east while a 10 N force pushes the rock due north at the same time. What will the rock experience in terms of movement? (be specific)
Since the 2 forces are equal and 90 deg.apart, the rock will move North East which is 45 deg. CCW.
tanA = Y/X = 10/10 = 1,
A = 45 Deg.