the speed of car increase from 25 k/ h to 70 k/ h in 5 seconds . find mean acceration of the car
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Time given 5 sec
Initial velocity is 25 km /h
Final velocity is 70 km /h
Let's convert them in m/s
In first case
25*5/18=6.944
In second case
70*5/18=19.44
We know a= v-u/t
a=19.44m/s-6.94m/s/time
a=12.5/5=2.5m/s square
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