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Question
Q:- The speed of a car increases with constant acceleration. Its Initial Speed is 10 kilometers/hour and Final Speed is 470 kilometers/hour, and total Distance travelled is 5520 kilometers
Find [1] How much time did the car travel for.
Find [2] How much was its acceleration
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Step : 1
Average Speed (when acceleration is constant)= [(Initial Speed + Final Speed) /2 ]
Sav = [ (10 + 470)/2 ] = 240 kilometers/hour
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Step : 2
Distance Travelled= Average Speed x Time of Acceleration
5520 = 240 x T
5520 / 240 = T = 23 hours
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Step : 3
Final Speed = Initial Speed + Acceleration x Time of Acceleration
470 = 10 + A x 23
( 470 - 10 ) / 23 = A = 20 kilometers/hour2
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