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NEET 2022
Exam
NEET
Year
2022
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

NEET 2022 · Physics · Center of Mass, Momentum and Collision

The distance covered by a body of mass 5 ~g having linear momentum...

The distance covered by a body of mass 5 g5 \mathrm{~g} having linear momentum 0.3 kg m/s0.3 \mathrm{~kg} \mathrm{~m} / \mathrm{s} in 5 s5 \mathrm{~s} is:

Options

  1. A300 m300 \mathrm{~m}
  2. B30 m30 \mathrm{~m}
  3. C3 m3 \mathrm{~m}
  4. D0.3 m0.3 \mathrm{~m}

Correct answer

A. 300 m300 \mathrm{~m}

Step-by-step solution

Given, m=5g=0.005kg,P=mv=0.3kgm/s, and t=5s,\begin{aligned} m=5 \mathrm{ g} & =0.005 \mathrm{ kg}, \\ \mathrm{P}=m v & =0.3 \mathrm{ kg} \mathrm{ m} / \mathrm{s}, \text{ and } \\ t & =5 \mathrm{ s}, \end{aligned} (where, symbols have their usual meanings.) P=mv=0.3\mathrm{P}=m v=0.3 Hence, V=0.3m=0.30.005=60m/sHence,\mathrm{V}=\frac{0.3}{m}=\frac{0.3}{0.005}=60 \mathrm{ m} / \mathrm{s} Hence, the distance covered=speedspeed\timestimetime=60 \times 5=300 m\mathrm{ m}
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