Per NCERT §5.4, the KINETIC energy of a body of mass m moving with speed v is which?
Am v
B(1/2) m v
Cm v²
D(1/2) m v²
Answer & Solution
Correct answer: D. (1/2) m v²
NCERT §5.4: K = (1/2) m v². Scalar; always non-negative.
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