Question

define acceleration in term of formula​

Answer 1

》change in velocity / time taken =acceleration

》v-u/t=a

Answer 2

HEY MATE....!!!✌

♣ Acceleration

• Acceleration is the  rate of change of velocity with time.
• It  is defined as change of velocity of body per unit time.
• SI unit of acceleration is m/s²
• It is Vector Quantity.
• Acceleration = Change in velocity / time

       = Final velocity - Initial velocity / time

       = v - u / t

♣ There is two types of Acceleration

1. Uniform Acceleration

If the velocity changes in equal amounts in equal time of intervals and the object travels in a straight line than the uniform acceleration take place.

2. Non-uniform Acceleration

If the velocity changes in an equal amount in unequal intervals of time and object travels in straight line then non uniform acceleration take place.

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-: Additional Information :-

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♣ Zero Acceleration -  

• if the change in velocity is zero that is either object is at rest or moving with uniform velocity than zero acceleration will take place.

♣ Positive Acceleration -  

• When velocity of a body increases then positive acceleration take place.
• i.e v > u

♣ Negative Acceleration -  

• When velocity of a body decreases the negative acceleration take place.
• It is in the opposite direction of velocity.
• i.e v < u

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♠ Example

☞ Problem :-  

A toy car accelerates from 3m/s to 5m/s in 5 s. What is its acceleration?

☞  Answer :-

Given: Initial Velocity u = 3m/s,

Final Velocity v = 5m/s,

Time taken t = 5s.

= v - u / t

= 5 - 3 / 5

= 2 /5  

= - 0.4 m/s²

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