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Rest and Motion: Kinematics — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsRest and Motion: Kinematics1 Mark
Question
Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
  1. The faster one.
  2. The slower one.
  3. Both will reach simultaneously.
  4. Depends on the masses.
✓

Answer

  1. Both will reach simultaneously.

Explanation:

Because the downward acceleration and the initial velocity in downward direction of the two bullets are the same, they will take the same time to hit the ground and for a half projectile.

Time of flight $=\text{T}=\sqrt{\frac{2\text{h}}{\text{g}}}$

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