Question

a bus decreases its speed from 80km/hr to 60km/hr in 5sec. Find the acceleration of hte bus

Answer 1

Answer:

Explanation:

Acceleration is v-u/t,

v=80 km/h,

u=60 km/h,

t=5 sec,

80-60/5,

20/5,

4 ms^2 is the retardation.

Hope it helps you.

Answer 2

Solution :

Using equation, v = u + at

u = 200/9 m/s

v = 150/9 m/s

Now, 150/9 = 200/9 + a ( 5)

a = - 50/9×5

a = - 10/9

a = - 1.11 ( its retardation) m/s^2