*URGENT* 1. Which of the following statements about Newton's Third Law is the most true?

a The forces acting upon two objects are dependent on the initial velocities of the objects

b The law of conservation of momentum is obeyed in all systems

c The two objects colliding will have a change in their masses, but not necessarily their velocities

d The forces acting on two colliding objects are equal, but the effects of those forces on those objects may not be equal

2. Which of the following is the best definition of a closed system?

a A system in which there a no internal energy changes

b A system in which Newton's Laws are valid

c A system in which there are no external forces

d A system in which the law of conservation of momentum is not valid

answer:

2

explanation:

1+1 = 2

the reason this is so is because of basic addition. we can double check this without using addition if you really want. if you take 1+1=x, subtract 1 from both sides than you get 1 = x - 1. subtract x from both sides and you get 1 - x = -1. subtract 1 from both sides again and you get -x = -2. finally, multiply both sides by -1 to get x = 2. subtraction is still technically addition you say? fine, have it your way. 1 + 1 = x. by definition, adding something to itself is the same thing as multiplying it by 2. this means we can technically rewrite the equation as

1 * 2 = x. now all we have to do is solve it. 1 * 2 = x when simplified results in 2 = x, or x = 2. this shows 1 + 1 = x. you say you want a real answer. you want me to start you from the ground up? well i would, but that would practically just be stealing from what was written on this website: go check it out if you really need to.