That depends on the situation. If the object is moving freely in a vacuum, the speed stays the same. If an object is accelerating, the speed change depends in part, on the mass of the object.
Your mass will stay the same no matter where you go.
Yes, no gas is given off, therefore the mass of conversation will stay the same.
Your mass will stay the same. Mass is always the same no matter what.
non-constant speed is when the speed for an object does not stay the same
non-constant speed is when the speed for an object does not stay the same
Your mass would stay the same. Mass is the amount of matter in an object, so your mass would stay at 68kg.
After water has been boiled, its mass will stay the same.
mass mass
Yes
The two properties of a crayon that will stay about the same after being melted is it's color and mass.
The law of mass conservation is generally valid.
Yes. See the Law of Conservation of Mass.