Question

2. A bus decreases its speed from
80 km h-1 to 60 km h l in 5 s.
Find the acceleration of the bus.
railwau​

Answer 1

Explanation:

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Answer 2

Answer:

a = -10 / 9 ms ^ -2 or decelaration = 10/9 ms^ -2

Explanation:

Given ,

u = 80 kmph

Convert this into m/ s

u = 80 * 5/18 => u = 200 / 9

v = 60 kmph

Convert this into m/s

v = 60* 5/18 => v = 150/9

t = 5s

However we know the formula

a = v - u / t

=> a = (150/ 9 - 200 /9 ) / 5

=> a = ( -50/ 9 ) / 5

=> a = - 10/ 9 ms ^ - 2

Or decelration will be 10 /9 ms ^ - 2

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