Relative speed: Horizontal distance travelled in a collision

AI Thread Summary
In a collision with an infinite mass horizontal surface, the horizontal distance traveled by a particle is determined by its constant horizontal velocity, as no horizontal forces act on it. The collision time is specified as 0.2 seconds, and the coefficient of kinetic friction is zero, meaning friction does not affect the motion. The vertical component of velocity and the coefficient of restitution are not relevant for calculating horizontal distance in this scenario. Therefore, only the initial horizontal velocity component is needed to determine the distance traveled during the collision. The discussion emphasizes the importance of focusing solely on horizontal motion due to the absence of external forces.
physicsfun
Given coefficient of kinetic friction is zero and the coefficient of restitution is e:

A particle of mass m, collides at an angle (theta), with speed v, onto an infinite mass horizontal surface.
Collision time is 0.2 seconds.

What is the horizontal distance traveled by the particle during the collision?
 
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Since no horizontal force acts on the particle, the horizontal component of its velocity remains constant.
 
Doc, thanks for your reply!
so, and since it's just horizontal velocity... we just have to take into account the horizontal initial component and the vertical and coefficient of restitution are irrelevant in this case then?
 
That's what I would say.
 

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