Question

The momentum p ( in kg m/s) of a particle is varying with time t (in seconds) as P=2+3t^2. The force acting on the particle at t=3s will be
A) 18 N
B) 54 N
C) 9 N
D) 15 N

Answer 1

Answer:

18N

Explanation:

F = dp/dt

F = d(3t^2 + 2)/dt

F = 6t

F = 6x3   (t = 3)

F = 18N