4-3-newtons-second-law-of-motion_glossary
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Browse the glossary using this index
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
A |
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Acceleration (a)The rate of change of velocity; change in velocity divided by the time it takes for that change to occur. | |
Acceleration due to gravity (g)The acceleration of an object due to Earth's gravity (approximately 9.8 m/s² on Earth). | |
D |
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Directly ProportionalA relationship between two variables where if one doubles, the other doubles; if one is halved, the other is halved. | |
F |
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FreefallThe state of motion where the only force acting on an object is gravity. | |
I |
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InertiaThe tendency of an object to resist changes in its state of motion. | |
Inversely ProportionalA relationship between two variables where if one doubles, the other halves; if one is halved, the other doubles. | |
M |
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Mass (m)A measure of the quantity of matter in an object. | |
N |
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Net External Force (Fnet or ΣF)The sum of all external forces acting on a system. | |
Newton (N)The SI unit of force. 1 N = 1 kg·m/s² | |
Newton's Second Law of MotionFnet = ma (where Fnet is the net external force, m is mass, and a is acceleration) | |