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A projectile is fired at an angle `theta` with the horizontal direction from ` o` Fig. 2 (d). 30. Neglection the air friction, it hits the grond at (B) after 3 seconds. What is the heith of point (A) from groun? [Use g=10 m//s^(2)]`
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Height of point ` A from B` is thevrtical distance a body will cover in three seconds. Theus.
`AB=S 1/2 gt^(2) =1/2 xx 10 3^(2)`
`=45 m`.
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