Q: The position of a particle of mass 10 kg is (0, 100m) at t = 0. The equation of motion of the particle is v_{x}=50 – 16 *t* and *y* = 100 – 4*t*². Find the net force on particle at y = 0. Where v_{x} 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)