Question

Explain Acceleration​

Answer 1

Answer:

Acceleration is the change of velocity with respect to time .

Explanation:

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Answer 2

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✒ 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 =

$\boxed{ \large{ = \frac{Change \: in \: velocity}{time} }}$

$\boxed{ = \frac{Final \: velocity - Initial \: velocity }{time} }$

$\boxed{ \huge{= \frac{v - u}{t}}}$

✏ 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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-: Addition 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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Let take a simple Example question

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.

$\boxed{ \large \: Acceleration \: = \huge{ \frac{v - u}{t} }}$

Now substituting the values,

$\boxed{ \huge{ = \frac{ 5 - 3}{5}}}$

$\boxed{ \huge{ = \frac{ 2}{5}}}$

$\boxed{ \huge{ - 0.4 \: m {s}^{ - 1} }}$

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