Two projectile are thrown at the same time from two different points. The projectile thrown from the origin has initial velocity 3 \hat{ {i}}+3 \hat{ {j}} with respect to earth. The projectile has initial velocity {a} \hat{i}+ {b} \hat{j} with respect to earth thrown from the point (10,5) . (î is a unit vector along horizontal, \hat{j} along vertical). If the projectile collides after two second, then the

JEE Advanced 2020 Concept Recapitulation Test 1 Paper 2

Question : 12 of 54

Marks: +1, -0

Two projectile are thrown at the same time from two different points. The projectile thrown from the origin has initial velocity 3‌hat‌i+3‌hat‌j with respect to earth. The projectile has initial velocity a

∧

with respect to earth thrown from the point (10,5). (î is a unit vector along horizontal,

∧

along vertical). If the projectile collides after two second, then the

value of a is −2
value of a is ‌
1
2
value of b is ‌
1
2
value of b is −2

Validate

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