Question

What is acceleration..??​

Answer 1

Explanation:

Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

Answer 2

Acceleration

✿ A body said to have acceleration ,

☛ If there is change in the magnitude of velocity .

☛ If there is change in the direction of velocity

★ Acceleration is defined as the ratio of the change in velocity of the body and the time taken to undergo this change .

✷ Important Points :

★ Acceleration may be zero or positive or negative.

☛ The negative acceleration is called retardation .

☛ The Rate of increase in velocity of a body is called positive acceleration .

☛ The rate of decrease in velocity of a body is called retardation .

☛ IT is a vector quantity .