A bus decreases its speed from 80 km h1 to 60 km h1 in 5 s. Find the acceleration of the bus.
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Answer:
u= initial velocity= 80 km/h = 22.2 m/s
v= final velocity = 60 km/h = 16.7 m/s
t= time = 5 s
a= acceleration = ?
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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