Chapt 1 and 2 Motion Word Scramble
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| 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 |
| Speed in a given direction is | velocity |
| A negative acceleration is called | deceleration |
| The velocity of an object changes if | speed or direction changes |
| When deceleration occurs, velocity | decreases |
| An example of constantly changing velocity is | circular motion |
| 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 momentum | cannot be lost or gained |
| A distance-time graph for acceleration is always a | curved line |
| When an object slows, | it's velocity, speed, and momentum change |
| Force is necessary to | stop, start, or change the direction of an object |
| When forces are balanced, the motion of the object | does not change |
| What can be used to reduce friction? | oil, wheels, ball bearings |
| Example of fluid friction? | oil |
| Friction produced by wheels or ball bearings is called | rolling friction |
| What friction has the highest resistance? | sliding |
| 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 |
| Kg x m/s/s = | force |
| When working with force, weight is measured in | Newtons |
| Newton’s Third Law of Motion describes | for every action there is an equal but opposite reaction |
| Forces act in pairs falls under Newton’s | Third Law |
| What is the value of gravitational acceleration? | 9.8 m/s/s |
| As an object increases speed, the air resistance | increases |
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