The position of a particle of mass m 2kg is given by

Question

Compute all parts of following problem:

Problem: The position of a particle of mass m = 2kg is given by r=i(3t²-4t)+j(t³-8t²+10).

Part A: Find the magnitude and direction of the force acting on the particle at time t = 5seconds?

Part B: Calculate the angle between the force vector and the velocity vector at time t=2?

I need help to find the magnitude and direction of the force acting on the particle.