Practice Quiz

Praxis II General Science

Category - Physics

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Craig is on top of the school roof. He drops three objects, a watermelon weighing 5 kg, a soccer ball weighing 1 kg, and a golf ball weighing 0.1 kg off the roof at the same time. Which object will hit the ground first?
  1. The soccer ball.
  2. The watermelon.
  3. The golf ball.
  4. The soccer ball and the watermelon will hit first, followed by the golf ball.
  5. All three objects will hit the ground at the same time.
Explanation
Answer: E - All of the objects will hit the ground at the same time. There will be a small air resistance effect, but because all the objects are round, this will not be significant. The acceleration of gravity applies the same force to all three objects. Thus, they will all speed up at the same rate and hit the ground at the same time.
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