Question

what is acceleration

Answer 1

(1) Acceleration is the rate at which the velocity changes. 

(2) It may be positive or negative.

(3) Its units are m/s^2.

Answer 2

Hi,

Here is your answer,

The change in velocity in unit time is called Acceleration.

Acceleration = change in velocity/ time.

There are different types of acceleration.

1. Average acceleration:- If the velocity of a particle remains constant at time passes, we can say that it is moving with uniform velocity. If the velocity changes with time, it I'd said to be accelerated. The acceleration is the rate of change of velocity. Velocity is a vector quantity hence a change in its magnitude or direction or both will change the velocity.

2. Instantaneous acceleration:- The dimension of acceleration as m/s(square).

3. Uniform acceleration or constant acceleration:- If the velocity of the body changes by equal amounts in equal intervals of time, then it is said to be in uniform acceleration or constant acceleration.

If the velocity of a uniformly acceleration body changes from u to v, then it's acceleration is given by

a = v - u/t

Now, the formula we get,

v = u + at

Non- uniform acceleration:- If the velocity of the body changes by unequal amounts in equal intervals of time, then it is said to be in non - uniform accleration.

Hope it helps you.