Question

A ball falling vertically from rest was observed to fall through 80 meter in 2 second. How long it had been falling before it was observed? (Take g = 10 ms 2]
1. 2 s
2. 3s
3. 4s
4. 6S​

Answer 1

Answer:

3.4s

Explanation:

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Answer 2

It had been falling for 4 sec before it was observed