Question bank/JEE Main/Physics

JEE MainPhysicsModerateRelative motion

Two stones are in the same horizontal line and are505m50\sqrt{5}m
away. They are projected with a velocity of 10

respectively and with an angle of 37º and 53º with horizontal

respectively. The minimum distance between them in meters is 5n. Find s.

Suppose they don't strike the ground during the motion.

(take
g=10m/s2g = 10m/s^{2})

Show answer and solution
dmin⁡=505        sinθ=505×255=20md_{\min} = 50\sqrt{5}\ \ \ \ \ \ \ \ sin\theta = 50\sqrt{5} \times \frac{2}{5\sqrt{5}} = 20m

Source: Grass-G / P-16 Physics paper 25 Nov First.docx

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