Question

difference between acceleration and retardation

Answer 1

Time rate of increase of velocity is acceleration.
Time rate of decrease in velocity is called retardation

Answer 2

What is the difference between acceleration and retardation?

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5 ANSWERS



Shivaji Khadake, CSIR NET JRF Chemical Science

Answered Jan 14 · Author has 133 answers and 29.4k answer views

Acceleration



Acceleration is defined as the change in velocity per unit time. Acceleration is measured in m/s

2

.



=



Retardation

The negative acceleration is called retardation or deceleration. Its unit is same as acceleration.

Example:

1. Car starts from rest. After 5 seconds, its velocity becomes 10 m/s. Then find its acceleration.

Initial velocity (u) = 0

Final velocity (v) = 10 m/s

Time taken (t) = 5 s

Acceleration (a) =?

Or,



Or,



∴ a = 2m/s

2

2. The Car which starts from the rest has an acceleration of 0.3 m/s2. After 1 minute what will be its acceleration? What is the distance travelled by car?

Initial velocity (u) = 0

Time taken (t) = 1 min= 1 × 60 s = 60 s

Acceleration (a) = 0.3 m/s

2

Final velocity (v) =?

Distanced travelled (s) =?

According to formula, v= u+ at

Or, v = 0 + 0.3 × 60

V= 18 m/s





∴ s =540 m

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