Physics

The correct form of Newton's second law is —
F = $\dfrac{Δp}{Δt}$
F = m $\dfrac{Δv}{Δt}$
F = v $\dfrac{Δm}{Δt}$
F = mv

Laws of Motion

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Answer

F = $\dfrac{Δp}{Δt}$

Reason — As we know,

Force = Rate of change of momentum

F = $\dfrac{Δp}{Δt}$

= $\dfrac{Δ(mv)}{Δt}$

= $\dfrac{m(Δv)}{Δt}$

= ma

Thus, Newton’s second law will be F = $\dfrac{Δp}{Δt}$

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