Find the magnitude of the net force acting on this object at t = 2.00 s!?

Question

A 3.00-kg object is moving in a plane, with its x and y coordinates given by x= 5t^2 – 1 and y = 3t^3 + 2, where x and y are in meters and t is in seconds.

Answer 1

Take the 2nd derivative of x(t) and y(t). That's acceleration. Plug in t=2. Then use F = m*a. Find the resultant of the forces in x and in y.