Understanding the Physics of Elastic Collisions on a 45 Degree Slope

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Discussion Overview

The discussion revolves around the physics of elastic collisions involving a ball hitting a 45-degree slope. Participants explore the forces at play during the collision, the behavior of velocity vectors, and the implications of energy conservation in elastic collisions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the forces acting on the ball during the collision, suggesting that the normal force is perpendicular to the slope and that the sum of vectors might be parallel to the x-axis.
  • Another participant asserts that the only forces acting, besides gravity, are the normal force and that the velocity vector can be "moved" by these forces, independent of the force vector itself.
  • There is a suggestion that if energy is conserved, the speed of the ball before and after the collision should remain the same.
  • A later reply seeks clarification on the relationship between the angle of impact and the resulting velocity, questioning how the force from an impact is applied in relation to the surface it hits.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between forces and velocity vectors during the collision. While some agree on the role of the normal force, there remains uncertainty about the implications of these forces on the ball's motion and the conservation of energy.

Contextual Notes

Participants have not fully resolved the implications of the forces acting on the ball, particularly regarding the interaction between the normal force and the velocity vector. There is also ambiguity in the definitions and assumptions about the forces involved.

Who May Find This Useful

This discussion may be useful for students and professionals interested in the mechanics of collisions, particularly in understanding the dynamics of elastic collisions on inclined surfaces.

Joans
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How physics works when falling ELASTIC ball hits 45 degree slope?

At point of colision what forces are working? As do I believe- in time delta t- one force as moment was straght with y axis(prependicular to ground) and Normal force( or how do u call it) witch is prependicular to 45 degree slope? And then sum of vectors would be parallel to x axis? How?? When moment after colision would be also parallel to x axis? And speed before colision and after would be same? How to show this in equations hm?
 
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the only force (besides gravity) is the Normal, which is prependicular to 45 degree slope as you said. i am not sure what you ment by the force on the y axis, velocity? gravity? anyway the sum of the vectors doesn't have to be parallel to the x-axis in order for the ball's velocity to be parralel to the x axis, the forces basically "move" the velocity vector (which has nothing to do with the force vector) in 90 degrees (if the gravity is ignored) the speed should remain the same if energy is coserved.

hope i helped.
 
Okay, I figured out it, thanks
 
edoarad said:
the only force (besides gravity) is the Normal, which is prependicular to 45 degree slope as you said. ... the forces basically "move" the velocity vector (which has nothing to do with the force vector) in 90 degrees (if the gravity is ignored) the speed should remain the same if energy is coserved.

hope i helped.

Hi I am having a small fight with a work college and have searched high and low on google and this is about as close as I've gotten to an answer!

So, what your saying is if a ball hits a surface on an angle richochettes off at the opposite angle same velocity. the force (reaction seen by the surface) will be perpendicular to the surface?

And Hence if you were applying the Force from an impact of a rock on a bin wall (assuming no friction) that hit the wall on an angle you would apply the component of the force that acts perpendicular to the wall. Not in the direction that the rock was falling.
 

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