Question

A bus decreases its speed from 80 kmph to 60 kmph in 5 seconds. What is the acceleration of the bus?

Answer 1

Answer:

a=-4 m/s^2

Explanation:

u=80

v=60

t=5

a=v-u/t

a=60-80/5

a=-20/5

a=-4

Answer 2

Answer:

a = -1.11 m's^2

Explanation:

u = 80 kmph = 200/9 ms^-1

v = 60 kmph = 50/3 ms^-1

t = 5s

a = v - u/t

a = 50/9 x 1/5

a = -1.11 ms^-2

I hope this helps!