Question
What is velocity? State its units and types.
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Answer
The velocity of a body is the distance travelled by a body in a particular direction in unit time. Thus, rate of change of displacement is called velocity.
v = s/t
where: s = displacement; t = time taken; v = velocity
(MKS unit: m/s CGS unit: cm/s)
There are two types of velocities :
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- Uniform velocity: If there is equal displacement taking place in equal intervals of time, it is uniform velocity.
- Non-uniform velocity or variable velocity: If there is unequal displacement in equal intervals of time, it is non-uniform velocity.
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