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 projection on veci and vertically upward direction on vecj)

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 projection on veci and vertically upward direction on vecj)
Answer» ` 10 hat i - 30 hat J` `10 hat i + 30 hat j` `20 hat - 30 hat j` `10 hat i + 10 SQRT(3) hat j` ANSWER :A

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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 projection on veci and vertically upward direction on vecj)

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