question_answer

The velocity of a projectile at the initial point A is \[(2\hat{i}+3\hat{j})\,m/s.\] Its velocity (in m/s) at point B is

A) \[-2\hat{i}-3\hat{j}\]                  

B) \[-2\hat{i}+3\hat{j}\]

C) \[2\hat{i}-3\hat{j}\]                   

D) \[2\hat{i}+3\hat{j}\]  

Correct Answer: C

Solution :

  X component remain unchanged and Y component reverses.