Question

20. Distinguish between acceleration and retardation .​

Answer 1

Answer:

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Explanation:

Acceleration of a body is defined as the rate of change of its velocity with time.Velocity of the body increases with time.

i.e Acceleration = Change in velocity / Time taken for change

Retardation means negative acceleration. If the velocity of a body decreases,the acceleration is negative.

Example: The acceleration of a body is -5 m/s2. then we can say that the retardation of the body is 5 m/s2.

Answer 2

Answer:

ACCELERATION IS THE CHANGE OF RATE OF VELOCITY IN A GIVEN TIME

EVEN RETARDATION IS SAME BUT THE ONLY DIFFERENCE IS THT

ACCELERATION IS ALWAYS POSITIVE

RETARDATION IS ALWAYS NEGATIVE

ACTUALLY NEGATIVE ACCELERATION IS ONLY RETARDATION

FOR SUPPOSE INITIAL IS LESS THAN FINAL(VELOCITY)

THEN U CAN EASILY SUBT FINAL FROM INITIAL

BUT IF INITIAL IS BIGGER THEN UR ANSWER WILL BE IN NEGATIVE TERMS