The velocity of projectile at the intial point A is ( 2 i + 3 j )… - Vidyadip

MCQ

The velocity of projectile at the intial point $A$ is $\left( {2\hat i + 3\hat j} \right)$ $m/s $ . It's velocity (in $m/s$) at point $B$ is

A
$\;\left( { - 2\hat i - 3\hat j} \right)$
B
$\;\left( { - 2\hat i + 3\hat j} \right)$
✓
$\;\left( {2\hat i - 3\hat j} \right)$
D
$\;\left( {2\hat i + 3\hat j} \right)$

✓

Answer

Correct option: C.

$\;\left( {2\hat i - 3\hat j} \right)$

c
$\begin{array}{l}
At\,{\rm{ point}}\,B\,X\,component\,of\,velocity\,\\
remains\,unchange\,while\,Y\,component\\
reverses\,its\,direction\\
\therefore \,The\,velocity\,of\,the\,projectile\,at\,{\rm{ point}}\\
B\,is\,2\hat i - 3\hat j\,m/s.
\end{array}$

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