All Questions
21
questions
0
votes
5
answers
125
views
Direction of impulse
My textbook has the following problem:
A batsman deflects a ball by an angle of 45° without changing the initial speed which is equal to 54 km/h. What is the impulse imparted to the ball? (Mass of ...
- 342
3
votes
3
answers
702
views
In this conservation of momentum problem, where is the sign error coming from?
Say I have a particle travelling in the $x$-direction and breaking into two pieces:
Conservation of momentum in the $x$-direction obviously gives:
$$mv = m_1 v_1 \cos(30) + m_2 v_2 \cos(60).\tag{1}$$
...
- 21.4k
1
vote
1
answer
69
views
Direction of momentum in a collision
In a simple perfectly elastic collision 1-D collision, with a ball of mass M_1 striking a rigid wall of mass M_2 head on,also$$M_2>>M_1,$$
then by law of conservation of momentum. $$\Delta\vec{...
- 561
0
votes
2
answers
523
views
Is momentum along the line of collision conserved when a ball falls on an inclined plane
A ball of mass 1kg falling vertically with a velocity2m/s strikes a wedge of mass 2kg. ...
- 135
0
votes
3
answers
183
views
How should a character´s movement change after colliding with a wall? [closed]
This character is supposed to move in a straight line in any direction. Logically, it would mantain some momemtum and redirect its movement after colliding. Here is an elastic collision, where AB is a ...
- 3
0
votes
1
answer
190
views
Head on collision of 2 cars and vectors
I was reading about a head on collision of 2 cars.
The bad guy was going 90mph on the highway in the wrong direction.The good guy was doing somewhere around 65mph.
Using vector addition, is it ...
- 183
0
votes
1
answer
370
views
Elastic collision of a ball against a container wall
I am writing a python script which calculates the final velocity of a ball after colliding with the wall of the container. The entire system is in 2D. The collisions are elastic, and the balls are all ...
- 13
0
votes
1
answer
570
views
Question about ball collision in 2D and conservation of momentum & kinetic energy
I have a question regarding the collision of 2 balls (of the same unit mass $m=1$) in 2 dimension, please.
We suppose that, right before the point of collision, the velocity of ball $\rm A$ was
$ [1, ...
user315366
1
vote
5
answers
417
views
Conservation of momentum using impulse equations
There is an inclined plane on a frictionless surface. A ball strikes the inclined plane horizontally with velocity $v_o$ and moves vertically after collision with velocity $v$ (see figure) mass of ...
- 121
0
votes
1
answer
47
views
Normal direction at a point in 3D coordinate system
I was reading this article and they said
Determine the collision point and the normal direction at this point.
Can someone help understand this?
- 1
0
votes
1
answer
68
views
Influence of geometry of collision on parameters after collision
In some of the physics problems I have done, the solution involves taking a snap shot right before collision and analysing the angles between the bodies. The angles between the bodies are supposedly ...
- 7,980
0
votes
1
answer
72
views
Reducing the line of collision of two rigidbodies while using the coefficient of restitution
I am trying to solve the problem of the collision of any two rigid-bodies. So far this is what I got:
I am concerned with the part where I reduce the equation with the coefficient of restitution by $\...
- 219
0
votes
1
answer
54
views
Why the lens is pushed to the right after light goes through?
I am asking myself why the lens must be pushed to the right in the following scenario: (image coming from Atoms and Sporks' nice video https://www.youtube.com/watch?v=UAmdoOX3870&t=327s)
This can ...
- 747
-1
votes
2
answers
78
views
Can you anti-dot? (9-22 from Marion Thorton) [closed]
I'm solving a question out of the textbook and it reduces to the following.
a particle of mass 2m with velocity $v_0$ collides with a particle of mass m at rest. The collision is elastic.
So using ...
- 419
1
vote
1
answer
167
views
What will be the velocity component in $x$-direction?
In the figure, the particle is hitting the surface at an angle $\theta$ and velocity $V_2$ along the $y$ direction.
Is there a name for this velocity? Can it be called orthogonal velocity?
I have ...
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