Question

a bus decreases its speed from 80 km h to 60 km h in 5 sec find the acceleration of the bus​

Answer 1

Answer:

80 km is the acceleration of the bus

Answer 2

Answer:

We know that $a= \frac{v-u}{t}$

Here u = 80km/h = 22.2 m/s

and v = 60 km/h = 16.6 m/s

t = 5 sec

Thus a = $\frac{16.6-22.2}{5}$ = $\frac{5.6}{5}$ = 1.12 m/s (approx)

Note:- You might think why I haven't put minus sign. Acceleration with "-" sign refers Retardation or deacceleration. So If retardation is asked, write without minus sign. Else with minus sign