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Question
Q:- The speed of a car is continuously increasing. Its acceleration is 11 kilometers/hour2 it means its speed increases by 11 kilometers/hour in every 1 hour. Its intial speed is 13 kilometers/hour. Will how long the car take to reach the speed of 222 kilometers/hour.
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Step : 1
Given- acceleration = 11 kilometers/hour2
It means speed increase by 11 kilometers/hour in every 1 hour.
The car intial speed is 13 kilometers/hour and the final speed is 222 kilometers/hour.
It means the speed increases by (222-13)
= 209 kilometers/hour
Speed increases by 11 kilometers/hour in 1 hour.
So, speed increase by 1 kilometer/hour in (1/11) hour.
So, speed increase by 209 kilometer/hour in (1/11)x209 hours.
= 19 hours
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