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If the speed of an object is doubled then its
The correct answer is (b) kinetic energy is raised to 4 times of its initial value.
Kinetic energy is given by the formula KE = (1/2) m v². If the speed (v) is doubled, then KE = (1/2) m (2v)² = 4 × initial KE. Thus, kinetic energy increases four times.
Class 9th Science NCERT MCQ Questions
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