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science
term/question | definition/answer |
---|---|
p = | m x v |
distance divided by time | velocity (v) |
density | mass divided by volume |
Fa = applied force | a force that is applied to an object by another object |
Fg = gravitational force | the force that attracts a body to the centre of the earth or any other celestial object |
Ffr = friction | a force that opposes motion when two surfaces are in contact |
Fair = air resistance | the frictional force air exerts against a moving object |
Fn = normal force | the reaction force that balances the weight of an object on a surface |
Fb = buoyant force | the upward force exerted by a fluid that opposes the weight of an object on a surface |
t = tension force | the force that is transmitted through a string or wire when it is pulled tight by forces acting on the ends |
gravitational force | newtons |
weight | a measure of the gravitational pull an object like the earth has for an object near its surface it is also a force, therefore, measured in newtons. |
mass | a measure of the amount of matter in an object. its SI units are kg. an object can have mass but not weight. |