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PS: Ch. 10
| Term | Definition |
|---|---|
| In __?__ Newton proposed his ideas on motion and universal gravitation | Principia |
| Quantities with magnitude and direction | vector |
| list assistances a simple machine provides | multiplying force and distance and changing direction of a force |
| In an ideal situation, a machine's work output is __?__ its input | equal to |
| SI unit of power | Watt |
| SI unit of Work | Joule |
| Center seeking force | centripetal force |
| Center fleeing force | centrifugal force |
| For every action, there is an equal and opposite reaction | 3rd law of motion |
| distance traveled in a given time | speed |
| velocity of an object doesn't change unless acted upon an outside force | 1st law of motion |
| gravitational force exerted on an object near the surface of the earth or any celestial body | gravity |
| SI unit of force | Newtons |
| quantity of motion of an object is the product of the object's mass and velocity | momentum |
| having mixed and movable pulleys in a machine is known as __?__ | block and tackle |
| branch of physics covering the effects of forces on matter | mechanics |
| Lever having input>fulcrum>output | Class 1 |
| Lever having input>output> fulcrum | Class 2 |
| Lever having fulcrum>input>output | Class 3 |
| when the force of air resistance of a falling object reaches the object's weight is known as __?__ velocity | terminal |
| resistance of an object's motion through a fluid or across a surface | friction |
| when 2 objects attract to one another because their masses and distance between them | Law of Universal Gravitation |
| Velocity is a __?__ quantity | vector |
| measurement of how well a machines input converts to output | efficiency |
| machine that resembles an inclined plane wrapped around a rod | Screw |
| machine with a sloping surface that allows an object to be raised without lifting straight up | inclined plane |
| the distance between a lever's fulcrum and input force | input arm |
| Quantity that has magnitude | Scalar |
| change in an object's position | displacement |
| Any change in speed, direction, or both | acceleration |
| list what can affect the force of friction | weight of object, coefficient of friction, nature of surface |
| overall external force is 0 and momentum is constant | Law of conservation of momentum |
| single vectors showing the combined effect of 2 or more vectors | resultant |
| distance between the ridges on a screw | pitch |
| inclined plane that redirects force to the side | wedge |
| circular lever | wheel and axle |
| rate of doing work | power |
| the thrust of a rocket is an example of which law of motion | 3rd |
| when 2 vectors that are travelling in the same direction or opposite directions | collinear |
| friction that affects moving objects | kinetic |