Question

A car starts from rest its velocity becomes 20 ms^-1 in 8s.Find its acceleration

Answer 1

Answer:-

• Initial velocity=u=0m/s
• Final velocity=v=20m/s
• Time=t=8s
• Acceleration=a=?

We know that

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

$\\ \qquad\quad\sf{:}\longrightarrow Acceleration=\dfrac{20-0}{8}$

$\\ \qquad\quad\sf{:}\longrightarrow Acceleration=\dfrac{20}{8}$

$\\ \qquad\quad\sf{:}\longrightarrow Acceleration=2.5m/s^2$