Question

velocity of a car started from rest reaches 24 m/s in 4s.what are the initial velocity and the final velocity of the car? Calculate its acceleration?​

Answer 1

Answer:

initial velocity of the car is zero metre per second and the final velocity of a car is 24 metre per second

Answer 2

Given :

• Velocity of a car started from rest reaches 24 m/s in 4 seconds .

To Find :

• Acceleration of the car .

Solution :

$\longmapsto\tt{Initial\:Velocity=0\:m/s}$

$\longmapsto\tt{Final\:Velocity=24\:m/s}$

$\longmapsto\tt{Time\:Taken=4\:seconds}$

Using 1st Equation :

$\longmapsto\tt\boxed{v=u+at}$

Putting Values :

$\longmapsto\tt{24=0+a(4)}$

$\longmapsto\tt{24=0+4a}$

$\longmapsto\tt{24=4a}$

$\longmapsto\tt{a=\cancel\dfrac{24}{4}}$

$\longmapsto\tt\bf{a=6\:{m/s}^{2}}$

So , The Acceleration of the car is 6 m/s² .

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Three Equations Of Motion :

• v = u + at
• s = ut + 1/2 at²
• v² - u² = 2as

Here :

• v = Final Velocity
• u = Initial Velocity
• t = Time Taken
• a = Acceleration
• s = Distance Travelled

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