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if a stone is to hit a point which is at a distance d away and at a height h above the point from where the stone start then the value of initial speed U if the stone is Launched at an angle theta is

if a stone is to hit a point which is at a distance d away and at a height h above the point from where the stone start then the value of initial speed U if the stone is Launched at an angle theta is

Grade:11

2 Answers

Arun
25750 Points
5 years ago
Dear student
 
U = sqrt [g d2 / 2(d tan theta – h)cos2 theta]
 
Hope it helps
 
Regards
Arun (askIITians forum expert)
Prabhdeep
15 Points
4 years ago
When a projectile is protected at some angle from the certain height :- H=usin theta T-1/2gt^2 ----1           & t=x/ucos theta where x is distance d                                put value of t in 1 equation 
        *H=usin theta ( d/ucos theta) -1/2g (d/ucos theta) ^2
      H=d/cos theta √g/2(d tan theta-h) 

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