science
Grade8
Easy
Question
Viyaan wants to check the constancy of the acceleration due to gravity in his garden, for which he collects some objects such as a piece of cloth, an iron ball, an apple and drops them all at a time from the same height. He finds that the objects do not land at the same time. Does it mean that the acceleration due to gravity on the Earth is not constant? Give reasons.
- No, the result is because of the upward air resistance acting on the objects.
- No, the reason the objects landed at various times is the constant acceleration due to gravity.
- Yes, the Earth exerts a force of varied size on the objects at different times.
- Yes, the Earth exerts force of varied sizes on the objects at separate places.
Hint:
No, the result is because of the upward air resistance acting on the objects.
The correct answer is: No, the result is because of the upward air resistance acting on the objects.
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