Riddle me this?

0 ⤊

If only an external force can change the momentum of the center of mass of an object, how can the internal force of the engine acclerate fa car?

2007-02-15 16:17:17 · 2 answers · asked by Space Cadet 3 in Science & Mathematics ➔ Physics

By applying (through the drive train) a force against the ground and remembering Newtons 3'rd Law of Motion.

HTH ☺

Doug

2007-02-15 16:22:28 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋

It can't accelerate anything without the tires getting that external push from the friction on the ground from the Earth.

2007-02-16 00:32:28 · answer #2 · answered by Ghidorah 3 · 0⤊ 0⤋