All Questions
6
questions
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1
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Defining Free Fall: Does Gravity Need to be the Sole Force Present?
Can a scenario be considered free fall in physics if the work done by forces other than gravity is zero, but those forces are still present? Or is it necessary for gravity to be the only force present ...
- 647
0
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1
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86
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An object falling from very far would have varying acceleration, how can that be accounted for?
I want to have a function that describes where a falling object is.
Like this one:
h(t) = -g*t²/2
But this one is for the usual close to the surface case, where there is no variation of gravity due to ...
- 101
1
vote
1
answer
123
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The behaviour of acceleration of a ball in motion
I have a few doubts on how the acceleration of a ball works when we throw it up in the air, In my mind, I could imagine it in some different "real world" cases, So I am listing them all down,...
- 209
0
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1
answer
543
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State space of free falling object is time variant?
In the case of a free fall object, if $h$ denotes distance from floor and $v$ the speed, then, given an input $U = g$, and $X=[h \quad v]^T$ and $\dot{X}=[\dot{h} \quad \dot{v}]^T$, I found that the ...
-1
votes
2
answers
97
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Distance an object has fallen given time
I am in Honors Physics, and need help understanding this:
The acceleration of Earth's gravity is 9.8 $m/s^2$, so when an object starts from rest, 9.8 $= x/t^2$, where $x$ is distance the object will ...
- 101
2
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1
answer
1k
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Free fall and terminal velocity
An object in free fall is defined as one that is moving solely under the influence of gravity.
So if an object has reached terminal velocity(force of gravity is cancelled out by upwards force of ...
- 104