- #1
Saitama
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Homework Statement
I don't have the exact problem statement but I remember the important data.
I have to find the value of ##x## in the figure such that the projectile reaches to its original position. The initial speed is ##20\sqrt{2}\,m/s## at an angle of ##45^{\circ}## with the horizontal. The walls are inclined at an angle of ##45^{\circ}## and the collisions with the wall are perfectly elastic.
(Ans: 60m)
Homework Equations
The Attempt at a Solution
Honestly, I did not where to begin with. I looked at the solution which was provided with the test paper and it only mentioned that the collision with the wall should take place at the highest point of projectile trajectory and it stated it without proof. For the overall motion, I figured that the trajectory should be something like shown in attachment 2 (I know its a poor drawing, drawing curves is difficult). But I don't see how to arrive at the result of ##60 m##. Do I have to deal with some series?
Any help is appreciated. Thanks!