Concept explainers
A moving car hovas kinetic energy. If it speeds up until it is going four times as fast, how much kinetic energy does it have in comparison?
The comparison of the kinetic energy of a moving car if it speeds up until it is going four times as fast.
Answer to Problem 10RQ
The kinetic energy of a moving car after speeds up will be sixteen times as compare to before.
Explanation of Solution
Given info: Initial velocity of the car is
Write the expression for the kinetic energy.
Here,
Substitute
Substitute
Conclusion:
Therefore, the kinetic energy of a moving car after speeds up will be sixteen times as compare to before.
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