Question

Can we use the equation Fnet=ΔpΔtFnet=Δ⁢pΔ⁢t when the mass is constant? a. No, because the given...

Can we use the equation Fnet=ΔpΔtFnet=Δ⁢pΔ⁢t when the mass is constant?

a. No, because the given equation is applicable for the variable mass only.

b. No, because the given equation is not applicable for the constant mass.

c. Yes, and the resultant equation is F=mvF=m⁢v

d. Yes, and the resultant equation is F=ma

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Answer #1

According to your question Fnet =Pt It is wrong equation .

Correct equation is Fnet =P/t ...1

Then We know that P=mv

Since m is constant So equation 1 become

Fnet=mV/t ..1

As you know a=V/t

So equation 2 become

Fnet =ma

Answer is (d).

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