Collision of two initially moving objects

  • Thread starter Thread starter Teachme
  • Start date Start date
  • Tags Tags
    Collision
AI Thread Summary
The discussion focuses on understanding the collision of two initially moving objects and the application of conservation of momentum in a center of mass (com) frame. A user is struggling to comprehend a specific step from a referenced website that outlines the process. The key to solving the problem lies in applying the transformation to the com frame and then analyzing the resulting equations. Working backwards from these equations can clarify the steps needed to solve the collision scenario. Overall, mastering this approach is essential for accurately analyzing such collisions.
Teachme
Messages
72
Reaction score
0
So I know how to solve for two initially moving objects that collide one way, but I was reading on this website another way to do it and I am not understanding a step. I've included a picture of the site and underlined the step I don't understand. I've tried a couple ways but I can't get it.

Here is the link the the site as well

http://farside.ph.utexas.edu/teaching/301/lectures/node76.html

Thanks for reading.
 

Attachments

  • questionPic.jpg
    questionPic.jpg
    7.1 KB · Views: 496
Physics news on Phys.org
"It is easily demonstrated that"... a bunch of equations that result.
YOu should be able to work backwards from the equations - you have to apply the transform to com frame as suggested and then work through the consequences of conservation of momentum.
 
  • Like
Likes 1 person

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Average velocity as a weighted mean'

Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »

Similar threads

I Adhesive Collision: Coding for Sticky Objects
Replies
9
Views
2K
I Work Done/Energy Transferred in One Dimensional Collision
Replies
5
Views
2K
I Question about Momentum vs. Kinetic Energy vs. Deforming In Collisions
Replies
2
Views
2K
Why Does Second Collision in Ballistic Pendulum Lead to Initial State?
Replies
5
Views
1K
I Conservation of angular momentum during collisions
Replies
3
Views
3K
Object collisions: momentum and force
Replies
3
Views
1K
Conservation of Momentum 2D Collision angles/directions
Replies
6
Views
2K
B How to determine applied force when two objects collide? (basic physics engine)
Replies
9
Views
2K
Collision of two billiard balls with spin
Replies
32
Views
5K
How will the two balls move after the collision?
Replies
5
Views
3K

Hot Threads

Recent Insights

Back
Top