Question

What is meant by acceleration ? Explain positive and negative acceleration .​

Answer 1

Answer:

• The rate of change of velocity is accelaration

• If the final velocity is greater than initial velocity then it is positve acceleration.

• If final velocity is lesser than initial velocity then it is negative acceleration or retardation

Hope it helped mark as brainliest:-)

Answer 2

Answer:

Acceleration:

The rate of change in velocity with respect to time is called acceleration. It is denoted by "a".

It is a vector quantity. It's formula is:

Acceleration= Change in velocity/time taken

a=∆V/t {∆V=Vf-V}

a=Vf-Vi/t

It's S.I unit is meter per second square (m/s²)

POSITIVE ACCELERATION:

If the velocity of object is increased then acceleration is said to be positive.

NEGATIVE ACCELERATION:

If the velocity of object is decreased then acceleration is said to be negative.