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Motion Forces Energy
Final Assessment
| Question | Answer |
|---|---|
| What determines how difficult it is to stop an object? | momentum |
| The rate of change in velocity is called | acceleration |
| What is used for a comparison when motion is described? | frame of reference |
| The rate at which an object moves is its | speed |
| Change in position in a certain amount of time is | motion |
| Circular motion is an example of constantly changing | velocity |
| Speed in a given direction is | velocity |
| A negative acceleration is called | deceleration |
| The velocity of an object changes if | either its speed or its direction changes |
| Even when slowly moving a train cannot stop suddenly because of its | large momentum |
| Speed that does not change is called | constant speed |
| The Law of Conservation of Momentum states that energy | cannot be lost or gained |
| Force is necessary to | change direction / stop or start and object |
| Not an example of fluid friction? | sugar |
| Friction produced by wheels or ball bearings is called | rolling friction |
| What friction has the highest resistance? | sliding friction |
| An object at rest will remain at rest is explained in Newton’s | First Law |
| Newton’s Second Law of Motion relates to | force, mass, and acceleration |
| Newton’s Third Law of Motion describes | for every action there is an equal but opposite reaction |
| What is the value of gravitational acceleration? | 9.8 m/s/s |
| Energy created when an object/medium is in motion. Examples include wind and flowing water | mechanical |
| Energy created when individual atoms are rubbing against each other. Examples: fire and friction. | heat |
| Energy created when chemical bonds between atoms are broken. There is chemical energy in food and batteries. | chemical |
| Energy created from moving electric charges. Examples: lightning and x-rays. | electromagnetic |
| Energy created when the nuclei of atoms split (fission) or fuse together (fusion). | nuclear |
| Energy is the ability to do ______________________. | work |
| Energy is measured in? | joules |
| Energy of motion is called what? | kinetic |
| This is the energy of position. Energy that is ready to be used. | potential |
| Energy that exists for objects that are above the ground. Example: a rock on a cliff. | gravitational potential |
Created by:
huizenga
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