![]() ![]() For a perfectly inelastic collision, the coefficient of restitution is 0, and the ball's velocity after the collision is zero (it "sticks" to the wall). The ball's velocity immediately after hitting the wall will be equal to its velocity immediately before hitting the wall. For a perfectly elastic collision, the coefficient of restitution is 1, meaning no energy is lost. ![]() The coefficient of restitution measures how much energy is lost during a collision. The ball can also lose energy during collisions. The kinetic energy of the ball is gradually converted to heat due to friction with the ground as it rolls. This allows you to get the ball around obstacles.Įventually, your golf ball slows down and stops. If you bounce the ball off a wall at a certain angle, it should rebound at the same angle. But, they are close enough that you can still use this assumption to plan the path of the ball. Friction between the wall and the ball can change how it spins, so the angles might not be exactly equal. With a rolling ball, it is a little more complicated than that since the ball is spinning. When light bounces off a mirror, the angles of incidence and reflection are exactly equal. These angles are measured between the ball's path and an imaginary line perpendicular to the wall. If you watch the ball carefully when it hits a wall, you will probably notice that the angle of incidence (as the ball moves towards the wall) is nearly identical to the angle of reflection (after the ball bounces off the wall). By carefully planning out the ball's path, you could even get a hole in one! Your goal is to get the ball into the hole by hitting it as few times as possible-this can be difficult with all that stuff in the way! One way to accomplish this is to bounce the ball off walls or other obstacles. You often have to get the ball around, over, or under one or more obstacles. In most mini golf courses, there is no direct path to the hole from where you start the ball. They do not want the course design to be too easy-holes in one would not be very exciting if they happened all the time! Conversely, they do not want the game to be too difficult and frustrating for players, or it would not be any fun. Real golf course designers have to take these same principles into account. However, with practice, you could probably get a hole in one on a hole that only required one or two bounces. If you tried to design a very complex hole that required multiple bounces to get from start to finish in one shot, this may have been too ambitious. Your ball does not rebound perfectly off the obstacles-it slows down a bit and can alter its spin, changing its direction. But in practice, you have to worry about friction and a spinning ball. You might have found that getting a hole in one was more difficult than it looked! On paper, it might be pretty easy to draw some shapes and then a line representing the ball's path from start to finish. Repeat the process for some of your other designs. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |