Linear Momentum and Second Law of Motion: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Linear Momentum and Second Law of Motion. Understanding the underlying formula is key to arriving at the correct answer below:

Momentum of object is given as, P = 2cos tˆi + 2sin t ˆj , 

From Newtons Second law, F = dP/dt = -2 sin t î + 2 cos t ˆj.

Taking Dot product of P and F we get = -4 sint . cos t + 4 sint .cost =0 .

So, force and momentum are perpendicular to each other.