Question

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

Answer:

- 250/9 m/s²

Explanation:

Initial velocity = 80 × 5/18

= 200/9 m/s

Final velocity = 60 × 5/18

= 50/3 m/s

Time = 5s

Acceleration = v - u/t

= 200/9 - 50/3 / 5

= 200/9 - 150/9 / 5

= 50/9/5

= -250/9 m/s²

Acceleration is negative because it is decreasing it's velocity

Answer 2

Answer:

hey!!

Explanation:

question :- . A bus decreases its speed from 80 km h-1 to 60 km h-1 is 5s. Find the acceleration of the bus

u = 80km/h

=> 80×5/18

=> 22.2 m/s

v = 60km/h

=> 60×5/18

=>16.7 m/s

t = 5 s

a=?

we know that

a = v-u/t

a= 16.7-22.2/5

a= -5.5/5

Therefore, a=-1.1 m/s^2

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:)