Which of the following is the most accurate statement of the law of conservation of momentum?

a. the total momentum of a system of objects before and after an interaction is the same, if there are no outside forces acting.

b. momentum is a vector quantity.

c. when two objects collide, the momentum of each object stays the same.

d. the impulse acting on an object is equal to the momentum change it causes on another object.

Why should seat belts not be mandatory quick plz

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.