Are $\vec{F}$ and $\vec{a}$, in $\vec{F}=m \vec{a}$ instantaneous or average values (with respect to time)?
As F=ma is short for change in momentum/time, surely $a$ is an average?
Are $\vec{F}$ and $\vec{a}$, in $\vec{F}=m \vec{a}$ instantaneous or average values (with respect to time)?
As F=ma is short for change in momentum/time, surely $a$ is an average?