Can we use the equation Fnet=ΔpΔtFnet=ΔpΔt 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=mv
d. Yes, and the resultant equation is F=ma
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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