Concept explainers
Whether the speed of an object will also be doubled or not if the work done on it doubles its kinetic energy.
Answer to Problem 15SSC
Speed will not be doubled, but it will become
Explanation of Solution
Introduction:
The kinetic energy of an object is given by
Where m is the mass of the object and v is the velocity of the object.
Let the initial Kinetic energy of an object be,
Then, if the work done in it doubles its kinetic energy, then its new velocity will be,
Conclusion:
Thus, if the work done doubles the kinetic energy of an object, then it speed will become
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