All Questions
Tagged with collision projectile
67
questions
-1
votes
2
answers
51
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For an objective falling, reaching terminal velocity and then hitting the ground, how can I find the force it exerts on the ground? [closed]
For example object with v=tanh(0.1213)t/0.01236. m=69kg.
I thought I had to use F=mv/t but that just gives the net force of the object while falling.
I don't know how to find the force impacting on ...
- 91
2
votes
0
answers
61
views
Why is it so much easier to kick a basketball when it is just bouncing back from the ground?
A basketball coach showed me that when you bounce a basketball back from the ground, it is much easier to kick it far away (actually it shoots out like a rocket), but when you want to kick it like a ...
- 29k
3
votes
1
answer
267
views
Does something similar to a gravitation impulse exist?
Let there be a block of mass $M$ sitting on top of a table. there is a hole in the table right under the center of mass of the block.
A bullet of mass $m$ is shot through this hole and it hits the ...
- 629
0
votes
2
answers
78
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Dropping a skyscraper (hypothetical question)
This is hypothetical question: imagine a tall skyscraper says 1000m tall is lifted by a nign indestructible cables attached only at the top of the building. When the cable is released what happens? ...
- 13k
1
vote
1
answer
38
views
Simple ball and club interaction based on the clubs normal
I am playing with creating a mini-golf game and would like to apply the basic forces of the club and ball.
The problem I am struggling with is when the club (assume its a perfect square face) ...
- 63
0
votes
0
answers
17
views
Resource Recommendations for Rigorous Analyses of Impact Mechanics and Terminal Ballistics
I'm an engineer with close relations in body-armor-wearing occupations and am interested in better understanding the extent to which the physical separation of hard body armor plates from the surface ...
1
vote
1
answer
50
views
Conditions for ball to retrace after colliding with wall
When a ball collides to wall,what would be some conditions for it to retrace or atleast return to from where it was thrown.
When thought about it I was getting a result that ball has to collide with ...
- 66
9
votes
2
answers
2k
views
Which way does a stone move when hit by a wheel/tire?
I don't think this exact question has been asked before in the physics section. I am mostly interested in understanding it conceptually rather than calculation. I have asked the same question in the ...
- 665
0
votes
1
answer
133
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When exactly is "just before hitting the ground"? [closed]
So it just hit me, "When is just before"? Cos just before could be a second ago or half a second ago or a tenth of a second ago and so on. So when? And do the final velocity formulas put ...
- 1
10
votes
3
answers
4k
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Will spinning a bullet really fast without changing its linear velocity make it do more damage?
The damage caused by a solid projectile can be roughly approximated with its kinetic energy, since all of that energy will be dissipated into the target on impact (in an ideal scenario, ignoring ...
1
vote
2
answers
73
views
Why do puddles of coffee sludge have spikes over its perimeter at regular intervals?
After I finished my coffee, I by mistake dropped my cup on the floor. The sludge as it dropped, painted circles with little spikes in gaps over it perimeter:
Why do these spikes come in (mostly) ...
- 7,980
8
votes
5
answers
938
views
Why does a ball when bounced at an angle not come back to you?
Say we have a ball. We throw it at the wall at an angle. The ball hits the wall with a force and a direction away from you. The wall then applies a force equal in magnitude and opposite in direction. ...
- 81
3
votes
4
answers
1k
views
Will an ideal bouncing ball ever stop bouncing?
By an ideal ball I mean a bouncing point mass with the property that it loses half of the velocity (50%) after each bounce. Now according to my definition of ideal ball, it is impossible for the ball ...
- 157
0
votes
2
answers
52
views
Lt. Joe Kenda's expertise(?) in fundamental physics
I may have gotten confused due to advanced age, but I heard Joe Kenda on the TV show "Homicide Hunter" make a statement that left me befuddled and in doubt. Of course, the lieutenant has ...
- 3
2
votes
1
answer
75
views
Physics of tennis hit
If one takes notice the tennis players hit the ball on the right corner that way: Their last step before the hit is on the right foot, then they hit and then their left foot goes up in the air about ...
- 651