神马作文网英文物理题,麻烦写出英文的回答,
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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.
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.
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.
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.