| Question |
Answer |
| force | is a push or a pull that acts on an object. |
| net force | is the overall force acting on an object after all the forces are combined |
| newton | is the force that causes a 1-kilogram mass to accelerate at a rate of 1 meter per second each second (1 m/s2). |
| balanced force | the net force is zero and there is no change in the objects motion |
| friction | force that opposes the motion of an object that touch as they move past each other |
| static friction | the friction force that acts on objects that are not moving |
| sliding friction | a force that opposes the direction of motion of an object as it slides over a surface |
| rolling friction | a friction force that acts on rolling objects |
| fluid friction | the motion of an object through a fluid |
| air resistance | fluid friction acting on an object moving through the air |
| gravity | the force that acts between any two masses |
| terminal velocity | the constant velocity of a falling object when the force of air resistance equals the force of gravity |
| projectile motion | the motion of a falling object after it is given an initial forward velocity |
| inertia | the tendency of an object to resist change in its motion |
| mass | the measure of the inertia of an object depends on the amount of matter an object contains |
| acceleration | net force /mass |
| weight | the force of gravity acting on an object |
| "Weight Equals" | mass x acceleration due to gravity |
| momentum | the product of an objects mass and its velocity |
| momentum formula | mass x velocity |
| law of conservation of momentum | no net force acts on a system than the total momentum of the system does not change |
| electromagnetic force | associtated with charged particles |
| strong nuclear force | a powerful force of attraction that acts only on the neutons and protons in the nucleus, holding them together |
| weak nuclear force | an attraction force that only acts over a short range |
| gravitational force | an attraction force that acts between any two masses |
| centripetal force | a center directed force that continuously changes the direction of an object to make it move in a circe |
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