Solve the below problem:
Q: A 3-lb particle is acted upon by a force F = (20 sin 2t)i + (24 cos 2t)j, where F is expressed in pounds and t in seconds. Determine the magnitude and direction of the velocity of the particle at t = 6s knowing that its velocity is zero at t = 0. You must solve the given problem step by step. You should include all the units which are needed to clarify the given problem.