This is the phase of matter with no fixed shape or volume. Example: Air, water vapor
This is the sum of all the forces applied to an object. It is usually separated into a horizontal and vertical component.

Example: With an object in free fall, this is zero.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl