Foundation Science Primary 6 Interactions

Ravi dropped a feather and a rock from the same height in a vacuum (where there is no air). Which of the following is correct?

A Both will hit the ground at the same time.
B The rock will hit the ground first.
C The feather will hit the ground first.
D Neither will fall because there is no air.
Show Worked Solution

Worked Solution

Step 1: Gravity acts on all objects with mass. Step [2-9]: Air resistance usually slows light objects down. Step [2-9]: In a vacuum, air resistance is zero, so gravity pulls both at the same acceleration.

Correct answer: Both will hit the ground at the same time.

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