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NEET2026PhysicsChapterActual

A bullet of mass 20 g is moving with a constant linear momentum of 8 kg m/s . The time taken by the bullet to cover a straight distance of 120 m is:

Options

  1. A0.3 s
  2. B3 s
  3. C30 s
  4. D300 s

Correct answer

A. 0.3 s

Step-by-step solution

Given mass of the bullet, m = 20 g = 20 10⁻³ kg Linear momentum, p = 8 kg m/s Velocity of the bullet, v = p m = 8 20 10⁻³ = 400 m/s Distance to be covered, d = 120 m Time taken, t = d v = 120 400 = 0.3 s Answer: 0.3 s

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