All Questions
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When you drop a feather from high off the ground, when it gets near the ground, how will its speed have changed?
When an object falls, it should fall faster and faster because of gravitational acceleration. But when we are talking about a feather, we have to talk about air resistance. Air resistance is ...
1
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1
answer
54
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Does the force that need to be applied to pull the weight out of a well by string is more at the start?
One way to estimate depth of the well is attaching a weight to a string then throwing it into the well until it touch a hard surface then pulling the string out of the well and evaluate its length.
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22
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4
answers
3k
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Ball thrown faster than terminal velocity [duplicate]
I recently read about the property of terminal velocity for objects and I got a question when doing so.
If from a very tall building I throw a ball faster than terminal velocity downwards, will the ...
- 1,289
1
vote
2
answers
3k
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Does air resistance increase the speed of a falling object?
I just saw an experiment where a heavy object (bowling ball) and a light object (feather) are dropped in a vacuum and they both fall at the same speed (almost like a slow motion video) and reach the ...
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1
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How to determine how much an object going straight up will horizontally slow down?
So if an object goes straight up, it ends up moving a little horizontally due to some force slowing it down relative to the rotational speed of the earth. My best guess as to what this force is, is ...
- 115
1
vote
1
answer
78
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100 lbs of drag? Really? Chain running physics
Recently came across this video of an endurance technique involving the strapping of a 100lb chain to one's back and running along the grass dragging it behind. What is the true force experienced by ...
0
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1
answer
301
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Can the phrase "Terminal Velocity" be used to describe non-gravity situations?
According to Wikipedia:
[Terminal Velocity] is the velocity of the object when the sum of the
drag force (Fd) and buoyancy equals the downward force of gravity (FG)
acting on the object. Since ...
- 101
0
votes
3
answers
3k
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Parachute in vacuum
Consider that the earth is vacuum. Consider a person of weight 100 kg is falling from sky with an parachute . He is free falling at height of 3000 m. When will he reach the ground? What would happen ...
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