Assessment Review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What determines how difficult it is to stop an object? | momentum
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The rate of change in velocity is called | acceleration
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What is used for a comparison when motion is described? | Frame of Reference
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The rate at which an object moves is its | speed
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Change in position in a certain amount of time is | motion
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Speed in a given direction is | velocity
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A negative acceleration is called | deceleration
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The velocity of an object changes if | speed or direction changes
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When deceleration occurs, velocity | decreases
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An example of constantly changing velocity is | circular motion
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Even when slowly moving a train cannot stop suddenly because of its | large momentum
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Speed that does not change is called | constant speed
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The Law of Conservation of Momentum states that momentum | cannot be lost or gained
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A distance-time graph for acceleration is always a | curved line
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When an object slows, | it's velocity, speed, and momentum
change
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Force is necessary to | stop, start, or change the direction
of an object
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When forces are balanced, the motion of the object | does not change
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What can be used to reduce friction? | oil, wheels, ball bearings
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Example of fluid friction? | oil
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Friction produced by wheels or ball bearings is called | rolling friction
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What friction has the highest resistance? | sliding
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An object at rest will remain at rest is explained in Newton’s | First Law
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Newton’s Second Law of Motion relates to | force, mass, and acceleration
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Kg x m/s/s = | force
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When working with force, weight is measured in | Newtons
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Newton’s Third Law of Motion describes | for every action there is an equal
but opposite reaction
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Forces act in pairs falls under Newton’s | Third Law
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What is the value of gravitational acceleration? | 9.8 m/s/s
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As an object increases speed, the air resistance | increases
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