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  4. The velocity of a projectile at the initial point A is ( 2 hati + 3 hatj ) m /s . It's velocity (in m /s) at point B is :

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Q. The velocity of a projectile at the initial point A is $( 2\hat{i} + 3 \hat{j} ) m /s $ . It's velocity (in m /s) at point B is :Physics Question Image

NEETNEET 2013Motion in a Plane

Solution:

so, $v_f = 2\vec{i} - 3 \vec{j}$

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