Question

$\huge\colorbox{cyan}{Question:-}$

What is velocity?​

Answer 1

$\huge \underline { \sf Answer : }$

$\large{\sf Definition}$

${\sf Velocity \: of \: an \: object \: is \: defined \: as \: the \: rate \: of \: displacement \: of \: an \: object \: with \: time \: or \: it \: is \: the \: distance \: travelled \: by \: an \: object \: per \: unit \: time \: in \: a \: definite \: direction.}$

$\large{\sf Formulae}$

$Velocity = Speed + Direction$

${ \sf If \: s \: be \: the \: displacement \: of \: an \: object \: in \: time \: t, \: then}$

$velocity(v) = \frac{displacement(s)}{time(t)}$

$So \: \: \: v \: = \frac{s}{t}$

$\large{\sf Units}$

${ \sf \: SI \: system - m/s}$

${ \sf CGS\: system \: - \: m/s }$

Answer 2

Answer:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ... Velocity is a physical vector quantity; both magnitude and direction are needed to define it.