the question I easily made:-
#3 normals to a parabola y^2 =4ax meet at (h,k).Then show that h>4a.
The question I have tried:-
#Find the locus of point such that 2 of the 3 normals drawn from them to the parabola coincide.
This is what i tried;
Now what to do after this.
This is what I don't know where to start.
#Find the locus of the vertices of the family of parabolas
well there was a solution too which he gave.
But that solution is not being digested by me.
The answer is 10%.
And the solution said that convert the percentage to the opposite of what it said. for example: If 70% have lost their left hand then there are 30% who have not lost it.And do the same with others.Then he added all these data claiming that maximum percentage who didn't loose any part is 90% ,hence minimum percentage who lost all parts is 100-90=10%.
When I asked him if the data would have been given like 50% each,he told me there won't be such question.
I am back after few months. Feeling really good to be here again.
How are you all?
So here is my question.
In second world war 70% soldiers lost their left arm, 75% lost their right arm, 80% lost their left eye and 85% lost their right eye.
Find the minimum percent who lost all four parts?
Now for the horizontal motion. At impact with the block, the velocity is still V and the block is moving at -V/4. We aren't told the mass of the block so no momentum equation is possible. But we can use the elasticity equation. We'll have to assume e=1 again as we aren't told anything else. So
You'll need to be careful with negatives here, but you should be able to get the velocity of the ball after the impact (assume block is still -v/4).
I am not sure if I could understand the way of using that equation properly.
Will you pls show how you placed all the terms in that.