# A balloon starts rising from ground from rest with an upward acceleration 2 m/s2. Just after 1 second, a stone is dropped from it. The time taken by stone to strike the ground is nearly?

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After one second (First Case)

Therefore in this case;

The distance traveled in this case by the formula

∴ s = 1m

Case Two:-

From there a stone was dropped...

Therefore the stone was falling under the effect of gravity

Therefore in this case;

The time can be calculated in this case by the formula

∴ t ≈ 0.45s