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Rest and Motion: Kinematics — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 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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