Error warning! At time 14:41, Mr. Larrison does not multiply the “C” term in the velocity equation by the mass value of 2 kg. In order for this equation to correctly show the momentum, every value from the velocity equation must be multiplied by the mass. However, seeing as this term does not hold a “t” value, it eventually goes away when deriving for Net Force.
Error warning! At time 14:41, Mr. Larrison does not multiply the “C” term in the velocity equation by the mass value of 2 kg. In order for this equation to correctly show the momentum, every value from the velocity equation must be multiplied by the mass. However, seeing as this term does not hold a “t” value, it eventually goes away when deriving for Net Force.
Good point! It should say p = mAt^2 + mBt + mC ... the mC would still go away when taking the derivate as you pointed out :)