Question

A bus decreases its speed from 60 km/h to 40 km/h in 2second. Find the acceleration of the bus?​

Answer 1

Answer:

• -2.775 m/s².

Explanation:

We have,

• Initial velocity (u) = 60 Km/h
• Final velocity (v) = 40 Km/h
• Time taken (t) = 2 seconds

To find,

• Acceleration (a)

Solution,

Acceleration:

=> Chane in velocity/Time taken

__________________

Initial velocity (u):

• 60(5/18)
• 16.66 m/s

__________________

Final velocity (v):

• 40(5/18)
• 11.11 m/s

___________________

Time taken (t):

• 2 sec

___________________

Acceleration:

=> v - u/t

=> 11.11 - 16.66/2

=> -5.55/2

∴ -2.775 m/s² is the acceleration of the bus.