A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 3.80-kg puck has a velocity of 4.00 m/s at one instant. Eight seconds later, its velocity is (6 + 16 ) m/s.
(a) Assuming the rocket engine exerts a constant horizontal force, find the components of the force.
(b) Find its magnitude.