Question

what is acceleration​

Answer 1

Answer:

Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down. ... Acceleration is defined as the change in the velocity vector in a time interval, divided by the time interval.

Explanation:

Answer 2

EXPLANATION:-

In uniform motion, the velocity remains constant with time. Thus, the change in velocity for anytime interval is zero. But, in non-uniform motion, velocity changes with time. Thus, the changein velocity for any time interval has a non-zero value.

In non-uniform motion, a new physical quantity called ‘acceleration’ is used.

The rate of change of velocity of a moving body with time is called acceleration.

$\boxed{\bf\;Acceleration=\frac{Change\;in\;velocity}{time\;taken\;to\;change}}$

We know change in velocity=Final velocity-initial velocity

So,

$\boxed{\bf\;Acceleration=\frac{final\;velocity-initial\;velocity}{time\;taken}}\\\\or\\\\\boxed{\bf\;a=\frac{v-u}{t}}$