Physics · 2013
JEE Main · 23 April 2013, Shift 1 · Q14
A boy of mass 20 kg is standing on a 80 kg free to move long cart. There is negligible friction between cart and ground. Initially, the boy is…
A boy of mass $\displaystyle 20$ kg is standing on a $\displaystyle 80$ kg free to move long cart. There is negligible friction between cart and ground. Initially, the boy is standing $\displaystyle 25$ m from a wall. If he walks $\displaystyle 10$ m on the cart towards the wall, then the final distance of the boy from the wall will be :
Official answer
(4)
$\displaystyle 17$ m
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.