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Grade: 11 
        
There are two value of time for which s projectile  is at the same height .the sum of these two times is equal to
 
9 months ago

Answers : (1)

Eshan
askIITians Faculty
2077 Points 
							Dear student,

Let the vertical compoenent of initial velocity beu.
HenceH=ut-\dfrac{1}{2}gt^2
\implies t^2-\dfrac{2u}{g}t+\dfrac{2H}{g}=0
Hence the sum of its roots is\dfrac{2u}{g}
9 months ago
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