Question

a bus decreases its speed from 80 km per hour to 60 km per hour in 5 second find the acceleration of bus​

Answer 1

$a = \frac{v - u}{t}$

$\frac{80 - 60}{5}$

$\frac{20}{5}$

$4$

Answer 2

Given : Initial Velocity : 80km

Final velocity : 60km

Time : 5 second

To find : Acceleration

Formula used : $\huge \frac{ v-u }{ t }$

Solution: Acceleration : $\large \frac{ v-u }{ t }$

= $\large \frac{ 60-80 }{ 5 }$

= $\large \frac{-20}{5}$

=$\large -4$

So, the acceleration is $\large -4m/s^{2}$