The velocity of a projectile at the initial point A ~is (2 ^ i - 3...

The velocity of a projectile at the initial point $A$ ~is \left(2\overset{^}{i} - 3\overset{^}{j}\right)ms^{- 1} $. Its velocity (in~$ ms^{- 1} $) at point$ B$ is

The velocity of a projectile at the initial point A ~is (2 ^ i - 3 ^ j )ms^ - 1 . Its velocity (in~ ms^ - 1 ) at point

Options

A $- 2\overset{^}{i} - 3\overset{^}{j}$
B $- 2\overset{^}{i} + 3\overset{^}{j}$
C $2\overset{^}{i} - 3\overset{^}{j}$
D $2\overset{^}{i} + 3\overset{^}{j}$

Correct answer

D. $2\overset{^}{i} + 3\overset{^}{j}$

Step-by-step solution

From the figure, the $X$ -component remains unchanged while the $Y$ -component is reverse. Then, the velocity at point $B$ is \left(2\overset{^}{i} + 3\overset{^}{j}\right)ms^{- 1}.

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