A bus decreases speed from 80 km per hour to 60 km per hour in 5 minutes calculate its acceleration
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initial velocity(u)=80km/hr
=80(5x 18)=200/7 m/s
final velocity(v)=60 km/hr
= 60(5x18)=50/3 m/s
time(t)= 5 seconds
using
acceleration= v-u/t
=50/3-200/7 x1/5
=150-200 x1/9x1/5=
=-50/9 x1/5
=-10/9m/s
=11.1 m/s sq.
=80(5x 18)=200/7 m/s
final velocity(v)=60 km/hr
= 60(5x18)=50/3 m/s
time(t)= 5 seconds
using
acceleration= v-u/t
=50/3-200/7 x1/5
=150-200 x1/9x1/5=
=-50/9 x1/5
=-10/9m/s
=11.1 m/s sq.
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