Question

a car has uniform acceleration of 4m/s 2 what is velocity of car after starting from rest after 3s

Answer 1

u = 0

a = 4 m/s^2

t = 3s

So with the help of first equation of motion

v = u + at

We get

v = 0 + 4*3

v = 12 m/s

Answer 2

Answer:

Final velocity = 12 m/s

Explanation:

Question-

A car has uniform acceleration of 4m/s² . What is velocity of car after starting from rest after 3s?

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Given Information -

• Acceleration(a) = 4m/s²
• Time (t) = 3 secs.
• Initial velocity (u) = 0m/s

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Required Solution-

• Final velocity (v)

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Solution -

$\blue\bigstar$What to do?

To find the final velocity with the given information, we'll follow the formula of Velocity Time Relation and will replace the value with the formula to attain our required solution.

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$\blue\bigstar$Formula -

• $\underline{\boxed{\sf\purple{v = u+at}}}$

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$\blue\bigstar$Answer -

[Replacing values]

$\implies$ㅤ v = u+at

$\implies$ ㅤv= 0+(4×3)

$\implies$ ㅤv= 0+12

$\implies$ ㅤv= 12

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ㅤSo, final velocity (v) is 12 m/s.