Quote:
|
Originally Posted by Happy Dance
yes... but the first
squirrel will sotp some of the force of the train 
so mass matters =P |
But the squirrel's mass is irrelevant (sp) to the train's mass. It's like your mass compared to the Earth, according to physics laws, you are also "pulling" the Earth (equal reaction for every action), so if you went 5 000 km into space you would still be pulling the Earth, but your mass compared to the Earth's makes it irrelevant.
If a train with a mass of 40,000 kg hits a squirrel that ways like.. .5kg ... then you won't notice the difference. If the object it hit was much bigger, then you'd see the difference.
If each arrow weighs say... 0.1 kg (probably less than that, or maybe not, but whatever), and the bow weighs 2kg, then the mass of 3 arrows becomes insignificant to the force put out by that bow (F=ma).