Question

A bus decreases its speed from
80 km h–1 to 60 kmh–1 in 5 s.
Find the acceleration of the bus.​

Answer 1

Step-by-step explanation:

bus decreases its speed from

80 km h–1 to 60 kmh–1 in 5 s.

Find the acceleration of the bus.

Answer 2

Initial speed u=80 km/h=80×

18

5

=22.22 m/s

Final speed v=60 km/h=60×

18

5

=16.67 m/s

Using v=u+at

Or 16.67=22.22+α×5

⟹ a=−1.1 m/s

2