|
Greetings,
1. IDK? Newtons's third law?
2.Convert Newtons to kg: 1kg ~ 1.25N
a. Every reaction has an equal and opposite reaction. (third law of motion)
b. An object will remain at rest or in constant velocity unless acted upon by another force, i.e. gravity. (first law of motion)
c.F=ma (second law of motion)
d. An object will remain at rest or in at a constant velocity unless acted upon by another force. (first law of motion)
4. For every action there is a reaction so the conservation of energy says that the two billard balls will maintain there speeds before and after collision because of Newtons' third law.
5. p=mass times velocity. Momentum of train and bullet could be the same since train has more mass than bullet but is moving at slower speed.
|