Answers

The Brainliest Answer!
2014-05-04T15:08:00+05:30
U=72 km/hr=72*5/18 m/s=20 m/s
v=54 km/hr=54*5/18 m/s=15 m/s
a=d/dt(v)
=>a=15-20/10
=>a=-5/10
=>a=-0.5 m/s^2
therefore,negative acceleration i.e.,deceleration of the bus is 0.5 m/s^2
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