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Chaitanya Borah Grade: 12
        

A ball is projected from a point 45m high, along the horizontal with speed 20m/s. if the ball perpendicularly strikes a plane inclined at angle theta with the horizontal. find tan(theta) [g=10m/s2 ]

6 years ago

Answers : (1)

Aman Bansal
592 Points
										

dear chaitanya,


As the projectile is projected , the horizontal or the y component remains the same ( we have neglected air resistance )


but the x component will increase due to acc due to gravity,


therefore , v2 = u2 + 2as


u=0


a=10m/s2


 s=45 m


therefore v= 30 m/s ,


as we know that  tan(theta) = v(along y component) / v( along x component)


tan(theta) = -2/3


 


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AMAN BANSAL

6 years ago
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