2. A bus decreases its speed from
80 km h-1 to 60 km h-1 in 5 s.
Find the acceleration of the bus.
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Answer:
Step-by-step explanation Initial speed (u) = 80km/hr =80*5/18 =22.22m/s
final speed (v)=60km/hr =60*5/18 =16.67m/s
time=5seconds
using a=v-u/t
a= 16.67-22.22/5
=16.67+(-22.22)/5
= -5.55/5
=-5.55*100/5*100
=-555/500
=-1.1 m/s2
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