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Question
Q:- The speed of a car is continuously increasing. Its acceleration is 18 kilometers/hour2 it means its speed increases by 18 kilometers/hour in every 1 hour. Its intial speed is 12 kilometers/hour. Will how long the car take to reach the speed of 876 kilometers/hour.
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Step : 1
Given- acceleration = 18 kilometers/hour2
It means speed increase by 18 kilometers/hour in every 1 hour.
The car intial speed is 12 kilometers/hour and the final speed is 876 kilometers/hour.
It means the speed increases by (876-12)
= 864 kilometers/hour
Speed increases by 18 kilometers/hour in 1 hour.
So, speed increase by 1 kilometer/hour in (1/18) hour.
So, speed increase by 864 kilometer/hour in (1/18)x864 hours.
= 48 hours
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