Physics · 2020
JEE Main · 2 September 2020, Shift 1 · Q2
Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively. A person is…
Train A and train B are running on parallel tracks in the opposite directions with speeds of $\displaystyle 36$ km/hour and $\displaystyle 72$ km/hour, respectively. A person is walking in train A in the direction opposite to its motion with a speed of $\displaystyle 1.8$ km/hour. Speed (in $\displaystyle \mathrm{ms}^{-1}$ ) of this person as observed from train B will be close to : (take the distance between the tracks as negligible)
Official answer
(4)
$\displaystyle 29.5 \mathrm{~ms}^{-1}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.