Question

A car starting from rest acquires a velocity of 180m/s in 0.05 h. The acceleration is 2.1 cm/s^2 5 m/s^2 1 cm/s^2 1 m/s^2​

Answer 1

Given:-

• initial velocity=0m/s=u
• Final velocity=v=180m/s
• Time=t=0.05h

To find:-

• Acceleration

Solution:-

First convert time to seconds

$\\ \sf\longmapsto 0.05\times 3600$

$\\ \bf\longmapsto 180s$

We know

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

$\\ \sf\longmapsto Acceleration=\dfrac{180-0}{180}$

$\\ \sf\longmapsto Acceleration=\dfrac{180}{180}$

$\\ \sf\longmapsto Acceleration=1m/s^2$