All Questions
Tagged with everyday-life kinematics
29
questions
40
votes
5
answers
9k
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When a bus goes around a corner, does the person sitting at the back travel further distance than the person sitting at the front?
This is a bit of childish question.
When a bus goes around a corner, does the person sitting at the back travel further distance than the person sitting at the front?
My thought is no because the bus ...
- 511
1
vote
0
answers
33
views
What was Grant Holloways top speed in his 12.81s 110m hurdle run using kinematics? [closed]
I am a currently a introductory biophysics student and I am attempting to analyze Grant Holloway's 12.81s 110m hurdle run. I thought the best approach would be to break the run into stages due to the ...
- 19
1
vote
0
answers
39
views
Why do spheres indented by a curve follow the curve when later rolled on the same curve?
In this Youtube Short it was mentioned a way of constructing a shape that followings any curve one could draw. Apparently the motivation to construct it is to do the following, roll a sphere of clay ...
- 7,980
2
votes
0
answers
48
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How do kitesurfers / kiteboarders move?
Explanations I've managed to find on the web either focus on how to practice the sport or how a kite flies. A full force vector decomposition that makes clear how downwind, upwind, and crosswind ...
- 359
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
views
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
2
votes
1
answer
341
views
What is the reactionary force exerted on a swing?
On a playground swing, children quickly learn how to swing higher and higher by timing their body motions with the resonant frequency of the swingset. But it occurs to me that it seems you're making ...
- 2,714
-1
votes
2
answers
74
views
Trajectory of hitting stump by swinging the ball
If we want to hit a target by a stone or missile we have to consider and calculate the interaction of the surroundings with the thrown object precisely. Can you show a mathematical model or trajectory ...
1
vote
0
answers
33
views
Is it possible to model calories burned using mass of the human, avg velocity and time travelled
I know it's impossible to get the exact value of calorie burned but a heuristic or an approximation would be just enough.
Given human body is 70% efficient then calorie burned=3.33*energy dissipated
- 13
1
vote
2
answers
3k
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Why does a corner slow a car down?
Lets say we have a car, with power being given to maintain it at 100 km/h and about to negotiate a slight bend. As the car turns the corner, there is no change to the accelerator pedal, and no braking....
- 19
2
votes
2
answers
2k
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Can ABS increase the braking distance of a car?
Question: Can an ABS (Anti-lock Braking System) instead of decreasing the braking distance actually increase it? If yes, is this its general behaviour, or only in specific circumstances?
Wikipedia ...
- 554
3
votes
2
answers
467
views
How can a player hit a home run with a broken bat?
Although they're rare, I've seen a few instances where a baseball player breaks their bat and still manages to hit a home run. Two examples:
Chris Davis from the Orioles did it in 2012 (https://www....
- 5,097
1
vote
1
answer
4k
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What is the "comfortable" acceleration in a curve and braking in a car? [closed]
A car that makes a curve or a braking will naturally have its horizontal G-Force altered according to its speed and the intensity of the braking or the angle of the curve.
My question is: which ...
- 121
0
votes
1
answer
1k
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What is the relationship between radius and tangential velocity?
So imagine you had a tennis racket. Let's say it is 27 inches. The swinger will swing the racket and at the tip of the racket it's going a certain speed.
If we increased the length of the racket to ...
0
votes
2
answers
759
views
Can a pillow destroy a window?
Say we have a steel ball and a pillow. If they both have the same kinetic energy when colliding with a window, do they do the same damage? Is it even possible for a pillow to destroy a window with any ...
