Question

Cody’s car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is the acceleration of the car?

Answer 1

Answer:

acceleration is 3m/s^2

Explanation:

u=0m/s

v=45m/s

t=15s

Applying newton's Law of motion,

v=u+at

we get,

45=0+15a

a=45/15

a=3m/s^2

Answer 2

Acceleration of the body is 3 m/s²

$\quad$ ━━━━━━━━━━━━━━

Answer

• Initial velocity = 0 m/s
• Final velocity = 45 m/s
• Time = 15 sec

$\sf :\implies Acceleration = \dfrac{Initial \ Velocity - Final \ Velocity}{Time}$

$\sf :\implies Acceleration = \dfrac{v - u}{t}$

$\sf :\implies Acceleration = \dfrac{45-0}{15}$

$\sf :\implies Acceleration = \dfrac{45}{15}$

$:\implies \underline{\boxed{\pink{\mathfrak{acceleration = 3 \ m/s^2}}}}$

$\displaystyle\therefore \: \underline{\textsf{Acceleration of the body is \textbf{3 m/s}}{}^{\sf 2}}$

Know More

• Acceleration is obtained by dividing the difference 9f the initial and the final Velocity with the time taken
• Rate of change of Velocity is called as acceleration
• Acceleration is a vector quantity, that is it has both magnitude and direction
• SI unit of Acceleration is m/s²