Physics · 2024
JEE Main · 6 April 2024, Shift 1 · Q34
A train starting from rest first accelerates uniformly up to a speed of 80 km / h for time t, then it moves with a constant speed for time 3 t. The…
A train starting from rest first accelerates uniformly up to a speed of $\displaystyle 80 \mathrm{~km} / \mathrm{h}$ for time $\displaystyle t$, then it moves with a constant speed for time $\displaystyle 3 t$. The average speed of the train for this duration of journey will be (in $\displaystyle \mathrm{km} / \mathrm{h}$ ) :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 70$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.