Question

a bus decreases it's speed from 80kmh-1 to 60km h-1 in 5sec find the acceleration of the bus ​

Answer 1

Answer:

Initial velocity u=80kmh-1

$\frac{80 \times 1000}{60 \times 60} = ms - 1 = 22.22ms - 1$

final velocity u=60kmh-1

$\frac{60 \times 1000}{60 \times 60 } = 16.66 {ms}^{ - 1}$

time t=5 sec , a=?

$a = \frac{v - u}{t} = \frac{16.66 - 22.22}{5} = - 1.11 {ms}^{ - 2}$