Question

A bus decreases its speed from 80km/h to 60km/h and its average time is 20min. Find the acceleration of the bus

Answer 1

Answer:

Formula a=v-u/t

Explanation:

Given v= 60and u=80 and t =20/60=1/3

Then a=-20 /2/3 =-60

Answer 2

Answer: -60 is the acceleration

Explanation:

t = 20 minutes = 1/3 hour

u= 80 km/h

v= 60 km/h

a= (v-u) /t

= (60-80)/(1/3)

= - 20/(1/3)

= - 20*3

=__- 60__