A body is projected horizontally from a height of 78.4 m with a velocity10ms^(-1). Its velocity after 3 second is : (g=10ms^(-2))(Take direction of projection onvec(i) andvertically upward direction onvec(i) ).

A body is projected horizontally from a height of 78.4 m with a veloci

1.	A body is projected horizontally from a height of 78.4 m with a velocity10ms^(-1). Its velocity after 3 second is : (g=10ms^(-2))(Take direction of projection onvec(i) andvertically upward direction onvec(i) ).
Answer» <html><body><p>`<a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a> hat(i) - 30 hat(<a href="https://interviewquestions.tuteehub.com/tag/j-520843" style="font-weight:bold;" target="_blank" title="Click to know more about J">J</a>)` <br/>`10 hat(i) + 30 hat(j)`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a> hat(i) - 30 hat(j)`<br/>`10 hat(i) + 10 sqrt(3)hat(j)`</p>Answer :A</body></html>