Standard Science Primary 6 Interactions

Jun Jie dropped a feather and a hammer at the same time in a vacuum (where there is no air). Which of the following is correct?

A The feather hits the ground first because it is lighter.
B Neither will hit the ground because there is no air.
C The hammer hits the ground first because it is heavier.
D They both hit the ground at the same time.
Show Worked Solution

Worked Solution

Step 1: Gravitational force pulls both objects downwards. Step 2: Usually, air resistance slows down the feather more than the hammer. Step 3: In a vacuum, there is no air resistance. All objects fall at the same rate due to gravity, hitting the ground simultaneously.

Correct answer: They both hit the ground at the same time.

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