Physics
Class 9
Free fall velocity
If an apple falls from a tree and hits the ground in 2 sec, how fast is it moving just before impact?
1 answers
50 votes
1 Answers
uniboardhub
4 months ago
Use v = gt. g ≈ 9.8 m/s², so v = 9.8 ?- 2 = 19.6 m/s ≈ 70 km/h. Surprising, right? Apples fall pretty fast!
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