Question

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

Answer:

120

Step-by-step explanation:

80×60 =480km/h

480km/h ×60 s

=28800s

Answer 2

Answer:

-10/9 m/s²

Step-by-step explanation:

acceleration a = final velocity - initial velocity

————————————————

total time taken

initial velocity = 80 km/h = 200/9 m/s

final velocity = 60 km/h = 150/9 m/s

so a = 150/9 - 200/9

———————-

5

a = -50/9

————

5

a = -10/9 m/s²

its a negative acceleration..

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