centripetal acceleration | ![{\displaystyle {\boldsymbol {a}}_{\mathrm {c} }}](https://wikimedia.org/api/rest_v1/media/math/render/svg/b109cb85f7f5433f186c3607484d1a59af8b609b) | |
speed | ![{\displaystyle v}](https://wikimedia.org/api/rest_v1/media/math/render/svg/e07b00e7fc0847fbd16391c778d65bc25c452597) | magnitude of velocity of motion |
radius | ![{\displaystyle r}](https://wikimedia.org/api/rest_v1/media/math/render/svg/0d1ecb613aa2984f0576f70f86650b7c2a132538) | segment in a circle or sphere from its center to its perimeter or surface and its length |
velocity | ![{\displaystyle {\boldsymbol {v}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/9b2c2d3aac4213f3996d828c6aa8f4eb464a05cc) | rate of change of the position of an object as a function of time, and the direction of that change |
time | ![{\displaystyle t}](https://wikimedia.org/api/rest_v1/media/math/render/svg/65658b7b223af9e1acc877d848888ecdb4466560) | dimension in which events can be ordered from the past through the present into the future |
speed | ![{\displaystyle |{\boldsymbol {v}}|}](https://wikimedia.org/api/rest_v1/media/math/render/svg/6e3bf0e2495636514b630563ab6d6bfd804436be) | magnitude of velocity of motion |