Question

A bus increases its velocity from 20m/s to 30m/s in 4s. Find its

acceleration.
(Ans: 2.5m/s?​

Answer 1

`\boxed{ \bold{ \huge{ \boxed{ \sf{2.5 \: m \: / \: {s} \: ^(2) }}}}}`

Step-by-step explanation:

`\star{ \text{ Given}}` :

Initial velocity ( u ) = 20 m / s

Final velocity ( v ) = 30 m / s

Time taken ( t ) = 4 second

`\star{ \text{ \: To \: Find}}` :

Acceleration of a bus ( A ) = ?

We know,

`\boxed{ \sf{acceleration \: ( \: a \: ) \: = (final \: velocity(v) - \: initial \: velocity \: ( \: u \: ))/(time \: taken \: ( \: t \: ))}}`

`\longmapsto \: { \sf{ \: acceleration = (30 - 20)/(4) }}`

`\longmapsto{ \sf{ \: acceleration = (10)/(4) }}`

`\longmapsto{ \sf{acceleration = 2.5 \: m \: / \: {s} \: ^(2) }}`

The acceleration of bus = 2.5 m / s ²

Hope I helped!

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~ TheAnimeGirl