| |
| |
| |
| |
| |
| / v0 |
| / |
|/)@ |
-----------
d
sorry for the bad diagram
Q. a ball is projected at an angle @ to the horizontal, between two walls 'd' distant from each other, with a velocity v0. the height of the walls is to be assumed to extend to infinity. assuming that the ball collides elastically with the walls, find the total time it takes for the ball to come down.
A.
the time that the ball takes to come down does not depend on horizontal component of velocity, only on the vertical component of it.
upon collision, the walls only may change the horizontal component of velocity. so actually this is nothing but a simple projectile motion sum;
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
47
