Question

a car was changing its velocity at a uniform rate if the initial velocity is 3m/s and final velocity is 9m/s. what is the average velocity of a car?​

Answer 1

Answer:

6 m/s

Explanation:

As per the provided information in the given question, we have :

• Initial velocity (u) = 3 m/s
• Final velocity (v) = 9 m/s

We are asked to calculate the average velocity of a car.

We can find the average velocity using the formula given below :

$\longmapsto \rm { \overline{\nu} = \dfrac{u + v}{2} }$

• $\overline{\nu}$ denotes average velocity.
• u denotes initial velocity
• v denotes final velocity

$\longmapsto \rm { \overline{\nu} =\Bigg ( \dfrac{3 + 9}{2} \Bigg )\; ms^{-1}}$

$\longmapsto \rm { \overline{\nu} =\Bigg ( \dfrac{12}{2} \Bigg )\; ms^{-1}}$

$\longmapsto \bf{ \overline{\nu} = 6\; ms^{-1}}$

∴ Average velocity of the car is 6 m/s.

$\rule{200}2$

Learn More!

We can find the average velocity in 3 ways,

● Average velocity = (u + v) ÷ 2

● Average velocity = Total displacement ÷ Total time

● Distance travelled = Average velocity × Time

Answer 2

❍ Given that, a car changed it's velocity from 3m/s to 9m/s at a uniform rate.

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━

To calculate the average velocity of the car we must know that ::

Average velocity = ( u + v )/2

Where,

• u denotes initial velocity
• v denotes final velocity

Finding average velocity :-

⤳ ( 3 + 9 )/2

⤳ 12/2

⤳ 6/1

⤳ 6 m/s

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━

• Henceforth, average velocity of the car is 6m/s.