Physics · 2013
JEE Main · 23 April 2013, Shift 1 · Q21
A projectile of mass M is fired so that the horizontal range is 4 km. At the highest point the projectile explodes in two parts of masses M/4 and…
A projectile of mass M is fired so that the horizontal range is $\displaystyle 4$ km . At the highest point the projectile explodes in two parts of masses M/$\displaystyle 4$ and 3M/$\displaystyle 4$ respectively and the heavier part starts falling down vertically with zero initial speed. The horizontal range (distance from point of firing) of the lighter part is :
Official answer
(3)
$\displaystyle 10$ km
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.