suppose decreases its speed from 80 kilometre hour per hour to 50 kilometre per hour in 4 seconds find the acceleration of bus
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Answer:
7.5 m/s
Explanation:
HERE YOUR ANSWER ...
A bus decreases it's speed so the final velocity ( v ) = 80 km / hr and the initial velocity ( u ) = 50 km/hr ... and time is 4 second
put the accelerate formula
a= v - u / t
a= 80 - 50 / 4
a= 30 / 4
a= 7.5 km/ hr.
then change into m/s
a = 7.5 / 1000
a = 0.0075 or 3/400
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