A body of mass 2kg is in equilibrium under the action of three coplanar forces, P, Q and R where P=3xi-2yj N, Q=2yi-4xj N, and R=-11i+4j N.

a) Calculate the values of x and y.

The force P ceases to act. Find.

b) The resulting acceleration of the body in component form.

c) The magnitude of the acceleration, giving your answer to 1 decimal place.

i and j are unit vectors.

I am completely confused by this question, can anyone offer up a method?

Thanks!