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A ball is projected horizontally from the top of a building. One second later, another ball is projected horizontally from the same point, with the same velocity. Will the first ball always be travelling faster than the second one?

Respuesta :

The speed of the balls will be same but the time to reach ground will be different.

Final velocity of the balls

The final velocity of each of the balls will be determined by applying the first kinematic equation as shown below;

Vf = Vi + gt

where;

  • Vf is the final velocity of the balls
  • Vi is the initial velocity of the balls
  • g is acceleration due to gravity
  • t is time of motion of the ball

Final velocity of the first ball

Vf = Vi + 9.8t₁

Final velocity of the second ball

Vf = Vi + 9.8t₂

Thus, we can conclude that, the speed of the balls will be same but the time to reach ground will be different.

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