Per NCERT Class 9 Science, Newton's SECOND law of motion in mathematical form is which?
AF = m × v
BF = m/a
CF = m + a
DF = ma (force equals mass times acceleration)
Answer & Solution
Correct answer: D. F = ma (force equals mass times acceleration)
Per NCERT §6.5 Eq 6.2, F = ma. The other formulas misstate.
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