\(\def \u#1{\,\mathrm{#1}}\)
\(\def \abs#1{\left|#1\right|}\)
\(\def \ast{*}\)
\(\def \deg{^{\circ}}\)
\(\def \tau{\uptau}\)
\(\def \ten#1{\times 10^{#1}}\)
\(\def \redcancel#1{{\color{red}\cancel{#1}}}\)
\(\def \BLUE#1{{\color{blue} #1}}\)
\(\def \RED#1{{\color{red} #1}}\)
\(\def \PURPLE#1{{\color{purple} #1}}\)
\(\def \th#1,#2{#1,\!#2}\)
\(\def \lshift#1#2{\underset{\Leftarrow\atop{#2}}#1}}\)
\(\def \rshift#1#2{\underset{\Rightarrow\atop{#2}}#1}}\)
\(\def \dotspot{{\color{lightgray}{\circ}}}\)
\(\def \ccw{\circlearrowleft}\)
\(\def \cw{\circlearrowright}\)
How Things Move
Why Things Move
speed
speed
velocity
- Speed (\(v\)) measured in m/s
- Velocity (\(\vec v\)) measured in m/s
newton's first law
inertial frames of reference
If the forces on an object are balanced, the object will maintain a constant velocity.
If an object is maintaining a constant velocity, then the forces on it are balanced.
newton's third law
force pair
force twins
If A exerts a force on B,
then B also exerts a force on A.
These forces have the same strength,
are the same type,
and point in opposite directions.