NEET Physics: Momentum and Collisions questions with solutions

Q1. A particle of mass \( m \) is made to move with uniform speed \( v \) along the perimeter of a regular hexagon. The magnitude of impulse applied at each corner is:

1. \( m v \)
2. \( m v \sqrt{3} \)
3. \( \frac{m v}{2} \)
4. \( \frac{m v}{\sqrt{3}} \)

Answer: \( m v \)

At each corner, the velocity direction changes by 120°, causing a change in momentum. Impulse equals this change, which is proportional to mv.