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Physics · 2020
JEE Main · 8 January 2020, Shift 2 · Q21
A ball is dropped from the top of a 100 m high tower on a planet. In the last 1/2 s before hitting the ground, it covers a distance of 19 m.…
A ball is dropped from the top of a $\displaystyle 100$ m high tower on a planet. In the last $\displaystyle \frac{1}{2} \mathrm{~s}$ before hitting the ground, it covers a distance of $\displaystyle 19$ m . Acceleration due to gravity (in $\displaystyle \mathrm{ms}^{-2}$ ) near the surface on that planet is \_\_\_\_.
Official answer
8 or 2888NTA’s answer key accepts either.
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.