Physics · LAWS OF MOTION

The linear momentum \( p \) of a body moving along a straight line varies with time \( t \) according to \( p(t) = (3t^2 + 4t + 2) \text{ kg m s}^{-1} \). The magnitude of force acting on the body at time \( t = 2 \text{ s} \) is:

1. A
   \( 16 \text{ N} \)
2. B
   \( 22 \text{ N} \)
3. C
   \( 10 \text{ N} \)
4. D
   \( 12 \text{ N} \)