英文物理题,麻烦写出英文的回答,1. What is the formula for momentum,and is it a  vector?  2. Briefly state Newton’s Third Law   3. If a box is

英文物理题,麻烦写出英文的回答,1. What is the formula for momentum,and is it a  vector?  2. Briefly state Newton’s Third Law   3. If a box is
英文物理题,麻烦写出英文的回答,
1. What is the formula for momentum,and is it a  vector?
  2. Briefly state Newton’s Third Law
  3. If a box is sliding to the right, what direction is the force of friction on the box?
  4. Name one  difference between  mass and weight.

英文物理题,麻烦写出英文的回答,1. What is the formula for momentum,and is it a  vector?  2. Briefly state Newton’s Third Law   3. If a box is
1.p=m*v,where p is the momentum,m is the mass,and v is the velocity.The momentum is a vector.
2.Newton's Third Law:
For every action,there is an equal and opposite reaction.
3.To the left.
4.Mass is a measurement of the amount of matter something contains,while weight is the measurement of the pull of gravity on an object.
One difference:the mass of an object doesn't change when an object's location changes.The weight,however,can change with location.