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| Question | Answer |
|---|---|
| Speed | Is the rate of change in position |
| Instantaneous speed | is the rate of motion at any given time |
| Constant speed | Is the speed that does not vary or change |
| Average speed | Is the total distance traveled divided by the total time of travel |
| Speed | Only indicates how fast something is moving |
| Velocity | describes both speed and direction of an object |
| Acceleration | Is the rate of change of velocity |
| Force | Is a push or pull one body exerts on another |
| Balanced forces | Forces on an object that are EQUAL in size and opposite in direction |
| Net force | An object always changes the velocity of an object |
| Inertias | Is the tendency of an object to resist any change in motion |
| Newton's first law | An object moving at constant velocity keeps moving at that velocity unless a net force acts on it |
| Friction | Is the force that opposes motion between two surfaces that are touching each other |
| Gravity | Is a force, Every object in the universe exerts a force on every other object |
| Weight | Is the measure of the force of gravity |
| Newton | Is the unit to describe the force exerted by the weight |
| Newtons seconds law | A net force acting on an object causes the object to accelerate in the direction of the force |
| Gravity | Causes all the falling objects to accelerate to the ground at the same rate of 9.8 |
| Amount of air resistance | On an object depends on the speed size shape and destiny of an object |
| Terminal Velocity | Is the highest velocity that will be reached by a falling object |
| Projectile | Anything thrown or shot through the air |
| Horizontal motion | Motion across side to side or parallel to the earth |
| Vertical motion | motion downward or perpendicular to the earth |
| Centripetal acceleration | Toward the center |
| Free falling | When an object forces are balanced |
| Artificial satellites | Are human made devices that orbit the earth for a specific purpose |
| Geostationary satellites | are put into orbit above the earth at the same speed as the earths rotation thus they seem to remain stationary above a specific point |
| Newtons third law of motion | to every action force there is an equal and opposite reaction force |
| Momentum | Is a property of a moving object has because of its mass and velocity |
| Law of conservation of momentum | states that the total amount of momentum of a group of objects does not change unless outside forces act on the objects |
| Newtons seconds law | A net force acting on an object causes the object to accelerate in the direction of the force |
| Force= | Mass X acceleration |
| Air resistance | Is the force air exerts on a moving object |
| Work | is exerting a force over a distance |
| Work = | Force X Distance |
| Power | is the rate (or how fast) work can be done |
| Power = | Work / time |
| Elastic potential energy | Is energy attained from a stretched or compressed object |
| Gravity causes all falling objects to accelerate to the ground at the same rate of | 9.8 m/s2 |
| Energy | The ability to do work |
| kinetic energy | Energy in motion KE 1/2 mv2 |
| Gravitational potential energy | Depends on the objects mass its hight and acceleration due to gravity PE= mgh |
Created by:
krystinahannah
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