A body is projected horizontally from a height of 78.4 m with a velocity 10 ms^(-1). Its velocity after 3 seconds is [g = 10 ms^(-2)] (Take direction of projectile on hat(i) and vertically upward direction on hat(j)).

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 velocity 10 ms^(-1). Its velocity after 3 seconds is [g = 10 ms^(-2)] (Take direction of projectile on hat(i) and vertically upward direction on hat(j)).
Answer» `10hat(i) - 30hat(J)` `10hat(i) + 30hat(j)` `20hat(i) - 30hat(j)` `10hat(i) + 10sqrt(3) HAT(j)` ANSWER :A