All Questions
Tagged with everyday-life collision
27
questions
0
votes
2
answers
56
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Would placing sand bags over the top of a car's strut housing reduce the jarring impact felt when the car hits a pothole? [closed]
I live in an urban area where many of the streets have pot holes and some of these streets have some very large and deep potholes. I have been wondering lately if it would be worth the effort to try ...
- 478
2
votes
0
answers
61
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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
-4
votes
4
answers
234
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How does a seatbelt help in a car crash? [closed]
If you are in a car crash, you will likely have on a seatbelt because they are supposed to help you from getting injured/harmed. But, I don't think they are that much of a help. First of all, say you ...
28
votes
6
answers
5k
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Why do the pieces of breaking objects scatter?
If I were to drop most objects to a level floor, they would land with a thud or bounce a few times without gaining any lateral velocity.
But a fragile object will not only break into two or more ...
- 1,663
1
vote
0
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104
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How are bubbles formed when a raindrop hits a flat pool of water?
I have noticed that raindrop impact can create a bubble on the surface of the water in a hot tub (104°F) up to several centimeters in diameter that is stable for several seconds before bursting.
The ...
- 2,270
1
vote
2
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73
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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
2
votes
1
answer
75
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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
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2
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209
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Do golf balls fly faster than the swing speed of the club? Or are they equal? If not, how do golf balls fly faster than speed of club?
How is it possible that golf balls or for that matter baseballs or any such hit object can travel faster than the speed of the thing used to hit them?
user311852
1
vote
1
answer
1k
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What is the physics behind the screen protectors? [closed]
Screen protectors are supposed to protect your device from nicks and scratches, and the stress of impacts which might otherwise lead to cracks. The basic idea being that screen-protector glass "...
- 799
4
votes
1
answer
164
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What allows a ball (squash ball) to roll and not bounce out of a corner?
In squash, a ball may roll out of a corner with little or no visible bounce.
What allows a warm and bouncy rubber ball, being hit into a corner with great force, to roll and not bounce out?
Can a kids ...
- 143
3
votes
1
answer
629
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Stopping Distance in Conservation of Momentum Investigation
In a set of old textbook materials from Merrill Physics from the mid 90s, there is a page on Fitch Inertial Barriers put near construction zones. Three cars are going to collide into a set of these ...
- 597
0
votes
2
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735
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What is the maximum height from which an object can be dropped without breaking it?
Suppose we drop from rest, a body of mass $m$ and breaking stress $\sigma$ on the ground from height $h$ and it collides with the perfectly rigid ground and comes to rest within a short time $t$. The ...
- 1,088
0
votes
1
answer
147
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How does forward motion affect downward impact forces?
I like to skateboard fairly regularly and am also an avid watcher of the sport. Earlier I was watching this video where a skateboarder tears his MCL on a landing down an enormous drop. However, after ...
- 191
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votes
2
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72
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How can the motion of the brain within the skull be stopped at the moment of impact? [closed]
How can the motion of the brain within the skull be stopped or controlled at the moment an object with velocity comes in contact with it. What type of a system would this require?
- 1,235
0
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1
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79
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"Plushness" of a simple mechanical damper?
What heuristics generally define the "plushness" of a mechanical damping or braking system? For example, if a person or some mass is to collide with a fixed wall or the ground (e.g., after a vertical ...
- 261