Q: The position of a particle of mass 10 kg is (0, 100m) at t = 0. The equation of motion of the particle is vx=50 – 16 t and y = 100 – 4t². Find the net force on particle at y = 0. Where vx is in m/s, t is in second and y is in meter.
(a) 80 N
(b) 160 N
(c) 240 N
(d) 179 N
Ans: (d)