# I don't get this physics joke?

#### yddet12

I saw this physics joke somewhere and didn't understand it. Could someone explain it to me?

Don't be a d^3x/dt^3

Thanks!

Related General Discussion News on Phys.org

#### micromass

The first derivative of x (the distance), with respect to time is called the velocity.
The second derivative is called the acceleration.
The third derivative is called the jerk.

So they're telling you: don't be a jerk...

#### SpectraCat

I saw this physics joke somewhere and didn't understand it. Could someone explain it to me?

Don't be a d^3x/dt^3

Thanks!
Well,

x denotes position, the first time derivative of position is velocity, the second time derivative of position is acceleration. As for the third time derivative, well, why don't you google "third time derivative of position" and see what pops up ...