Selina Solutions Class 9 Physics Solutions for Exercise 3C in Chapter 3 - Chapter 3 Laws Of Motion

Question 19 Exercise 3C

The correct form of Newton’s second law is:

(a) F=\frac{\Delta p}{\Delta t}

(b) \mathbf{F}=\mathbf{m}\frac{\Delta\mathbf{v}}{\Delta t}

(c) \mathbf{F}=\mathbf{v}\frac{\Delta\mathrm{m}}{\Delta t}

(d) \mathbf{F}=\mathbf{mv}


(a) F=\frac{\Delta p}{\Delta t}

Where a motion or momentum changes either due to change in velocity or change in mass or both.

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