Physics Asked by Snacc on July 14, 2021
I’m a high schooler currently taking AP Physics C and during our review of kinematics, our teacher brought up the difference between speed and velocity. That is, speed is a scalar while velocity is a vector. So that made me wonder, is there a scalar version of higher-order derivatives? For further clarification, look at the table below:
Order Vector Scalar
0th Displacement Distance
1st Velocity Speed
2nd Acceleration ???
3rd Jerk ???
I’m curious about what would fit under those two question marks (or if they even have a name.)
As far as I know, the scalar version of acceleration, $|mathbf a|$, does not have a special name. You would just say “acceleration”, and it would be understood by the context whether you are talking about a vector or a scalar. Same with jerk.
Correct answer by Gilbert on July 14, 2021
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