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# What are the different types of acceleration?

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## Definition of accelerationThe rate of change of velocity which is an example of a vector quantity is called acceleration. It is a vector quantity as it has both magnitude and direction. The S.I unit of acceleration is $\mathrm{m}/{\mathrm{s}}^{2}$.Formula$\mathrm{acceleration}=\frac{\mathrm{final}\mathrm{velocity}-\mathrm{initial}\mathrm{velocity}}{\mathrm{time}}\phantom{\rule{0ex}{0ex}}\mathrm{acceleration}=\frac{\mathrm{Change}\mathrm{in}\mathrm{velocity}}{\mathrm{time}}\phantom{\rule{0ex}{0ex}}\mathrm{a}=\frac{{\mathrm{v}}_{\mathrm{f}}-{\mathrm{v}}_{\mathrm{i}}}{\mathrm{t}}\phantom{\rule{0ex}{0ex}}\mathrm{a}=\frac{∆\mathrm{v}}{\mathrm{t}}$Here,$\mathrm{a}$ is the acceleration.${\mathrm{v}}_{\mathrm{f}}$ is the final velocity.${\mathrm{v}}_{\mathrm{i}}$ is the initial velocity.$\mathrm{t}$ is the time interval.$\mathrm{\Delta v}$ is the small change in the velocity.Different types of accelerationThere are three types of acceleration, such as:Uniform acceleration: When an object is traveling in a straight line with a uniform increase in velocity at equal intervals of time, then the object is said to be in uniform acceleration. The free-falling of an object is an example of uniform acceleration.Non-uniform acceleration: When an object is traveling with a uniform increase in velocity but not at equal intervals of time is known as non-uniform acceleration. Bus moving or leaving from the bus stop is an example of non-uniform acceleration.Instantaneous acceleration: The acceleration of an object at any instant of time is known as instantaneous acceleration.

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