How is Impulse Calculated in a Collision with Changing Velocities?

  • Thread starter Thread starter Aprizal
  • Start date Start date
  • Tags Tags
    Impulse Momentum
AI Thread Summary
The discussion revolves around calculating impulse in collisions with changing velocities, using two specific problems as examples. The first problem involves an aircraft that changes velocity after a meteor strike, while the second concerns a perfectly elastic collision between two balls. Participants emphasize the importance of showing effort in problem-solving before seeking help, as per forum guidelines. They encourage the use of the impulse equation I=m(V2-V1) to approach the first problem and clarify the expression of velocities. Overall, the thread highlights the need for proper problem setup and understanding of fundamental physics concepts in collision scenarios.
Aprizal
Messages
2
Reaction score
0

Homework Statement


1. An Aircraft Space 1000 kg moving with speed
(2000 i m / s). A meteor strikes the plane so that
speed become (2000 i + 2000 j m / s). how impulses
collision?
2. A 0.5 kg ball collides with the ball perfectly Resilience
The second is silent. The second ball away with
half speed the initial speed the ball. What percentage of the kinetic energy
transferred to the second ball ?

Homework Equations


1. I=m(V2-V1)
2. KE=KE'
[/B]

The Attempt at a Solution

 
Last edited:
Physics news on Phys.org
Hi and welcome to PF!

These are merely problem statements. If you read the guidelines for posting homework problems, you will find that they require you to show effort before we can help you (i.e., also fill in items #2 and #3 in the template that you used). If we do not know where you got stuck, it will be much more difficult for us to give you the appropriate help and we are not allowed to simply solve the problem for you. Instead, we will gladly point you in the right direction so that you can solve the problem yourself.
 
  • Like
Likes Aprizal
Orodruin said:
Hi and welcome to PF!

These are merely problem statements. If you read the guidelines for posting homework problems, you will find that they require you to show effort before we can help you (i.e., also fill in items #2 and #3 in the template that you used). If we do not know where you got stuck, it will be much more difficult for us to give you the appropriate help and we are not allowed to simply solve the problem for you. Instead, we will gladly point you in the right direction so that you can solve the problem yourself.
okay,, I'm first in PF and I'm sorry for that. I will change my post.
 
Aprizal said:
okay,, I'm first in PF and I'm sorry for that. I will change my post.

Dont worry, it is very common that this happens for first posters and your attitude to the guidelines is already better than some I have seen.
 
speed (2000 i m / s). A meteor strikes the plane so that
speed become (2000 i + 2000 j m / s)
@Aprizal: Can you explain what is meant by this way of expressing the velocities?
 
Aprizal said:
I=m(V2-V1)

So you now have this relevant equation. Have you tried applying this equation to your problem?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Work done during a collision -- Change in Kinetic Energy & change in Momentum
Replies
1
Views
2K
Ambiguous question on momentum and how it works...
Replies
13
Views
1K
How Does Impulse Relate to Momentum Change in Physics Problems?
Replies
7
Views
2K
Momentum and impulse of a football
Replies
2
Views
2K
Golf club 🏌️and ball ⛳ impulse problem
Replies
19
Views
2K
Impulse applied to a bouncing ball
Replies
13
Views
8K
Solving the Elastric 3-Body Collision Problem
Replies
2
Views
2K
How to Calculate Speed of Head of Driver After Collision?
Replies
10
Views
2K
Impulse and Momentum: Ball and cart connected by a cord
Replies
24
Views
3K
How to calculate rebound speed of ball hitting a wall?
Replies
4
Views
6K

Hot Threads

Recent Insights

Back
Top