Question

Define Acceleration ????​

Answer 1

Answer:

acceleration is the rate of change of velocity of an object with respect to time.

Its SI Unit is m/s^2

Answer 2

ACCELERATION

Acceleration is defined as the rate of change in velocity.

• SI unit is m/s²
• dimensions are MLT^-1

Acceleration are of two types according to velocity

Acceleration -> When the final velocity is more than the initial velocity.

Means when the velocity increases with time .

Here Acceleration is positive.

Retardation -> When the initial velocity is more than the initial velocity.

Means when velocity of any object decreases with time.

here, Acceleration is negative.

This type of Acceleration is also called negative acceleration.

Retardation of any object generally occurs when any object thrown upward or against the gravitational force.

Acceleration = ( v - u )/t

here,

v = final velocity

u = initial velocity

t = time taken for acceleration.

Gravitational acceleration

It is the type of acceleration produced by Earth's gravity to the object due the gravitational force of the Earth.

It is denoted by g

value of g = 9.8 m/s²

Uniform acceleration

When the object does not changes it velocity with respect to time.

here Acceleration = 0