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 :

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A

$2 \hat{i} + 3 \hat{j}$

21%

B

$- 2 \hat{i} - 3 \hat{j}$

14%

C

$- 2 \hat{i} + 3 \hat{j}$

14%

D

$2 \hat{i} - 3 \hat{j}$

51%

Solution:

so, $v_{f} = 2 i - 3 j$

Solution Image