<p align="right">Last Update: <font color="#4f81bd">December 12, 2024</font></p>
## BIG IDEAS
- Free fall is motion due to [[gravity]].
- Free fall is [[Notes Vault/Physics Notes Vault/Kinematics/Uniform Acceleration Motion/Constant Acceleration|constant acceleration]] until the object reaches a limit known as [[Terminal Velocity|terminal velocity]].
- [[Gravitational Acceleration|Acceleration due to gravity]] is used frequently by physicists, so it is given its own symbol, $g$.
### Slide Deck
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### Videos
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<iframe width="100%" height="480" style="border:0;" scrolling="no" src="https://go.screenpal.com/player/c06b3IVEjiA?width=100%&height=480&ff=1&title=0" allowfullscreen="true"></iframe>
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### Example Problem
An arrow is launched straight up with an initial velocity. How long does it take to return to the ground?
There are two approaches. The video below shows how to solve to $t_{\frac{1}{2}}$ then double it. A second approach is to assume the full flight and know that the initial and final positions are zero. Therefore, solve for time using kinematic equation 2.
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### Related Topics
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[[Home|Home]] | [[Notes Vault/Physics Notes Vault/Kinematics/Uniform Acceleration Motion/Constant Acceleration|Constant Acceleration]] | [[Kinematic Equations]] | [[Notes Vault/Physics Notes Vault/Kinematics/Uniform Acceleration Motion/Free Fall|Free Fall]] | [[Gravitational Acceleration]] | [[Terminal Velocity]] | [[Air resistance|Air Resistance]]