Foundation Science Primary 6 Interactions

Ravi dropped a feather and a stone at the same time from the same height in a room filled with air. The stone reached the ground first. Why?

A The stone is pulled by a stronger magnetic force.
B Gravity only acts on heavy objects.
C The stone has more gravitational potential energy.
D Air resistance acts more on the feather due to its larger surface area.
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Worked Solution

Step 1: Both objects are pulled by gravity. Step [2-9]: Air resistance opposes the motion of falling objects. Step [2-9]: The feather has a large surface area relative to its weight, so air resistance slows it down more than the stone.

Correct answer: Air resistance acts more on the feather due to its larger surface area.

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