Force does not exist physically in the same way that an object with mass. This means that the initial cause of all bodies in motion comes only from the applied Energy (E) times momentum (p) or the mathematical expressions Ep or the mathematical equation Ep = ma. ~Guadalupe Guerra from Laredo, Texas c/s

Same question. Why do we add m2 to the net mass. Isn’t that the netforce making m1 move.

How do you get the mass I dont really understand.

Thank you