alleryA body falls freely under gravity. The acceleration due to gravity (g) is approximately:
A980 m per second squared
B98 m per second squared
C0.98 m per second squared
D9.8 m per second squared
Answer & Solution
Correct answer: D. 9.8 m per second squared
1. The average value of acceleration due to gravity near Earth's surface is about 9.8 metres per second squared.
2. For simpler problems the value 10 metres per second squared is also used.
3. Larger or smaller values change by factors of ten but do not match the textbook average.
4. So the correct value is 9.8 metres per second squared.
_Source: Selina Concise Physics ICSE Class 9, Ch 2 'Motion in One Dimension' (aplustopper.com extract)_
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