5-4,6-1 quiz
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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| a force of attraction between objects that is due to their masses | gravity
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| Can gravity change motion? | yes
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| All --- is affected by gravity | matter
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| Why don't you see all gravity? | the mass of most objects is too small to cause large enough force to move objects
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| Earth has a --- gravitational force and if you overcome it, you must apply ---. | large; force
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| Newton watched a falling ---. | apple
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| Newton concluded that an --- force caused an apple to fall. | unbalanced
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| The law of universal gravitation describes the relationships between ---, ---, and ---. | gravitational force, mass, and distance
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| Describe the law of universal gravitation | All objects in the universe attract each other through gravitational force.
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| Part I of LUG: Gravitational force --- as mass increases. | increases
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| Part II of LUG: Gravitational force --- as distance decreases. | decreases
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| a measure of gravitational force on an object | weight
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| What is used to measure weight? | spring scale
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| Are weight and mass the same thing? | no
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| the amount of matter in an object | mass
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| --- (mass or weight) doesn't change while --- (mass or weight) does. | Mass; Weight
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| What is used to measure mass? | a balance
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| Unit for force: | Newton (N)
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| Unit for weight: | Newton (N)
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| Unit for mass: | Grams (g) or miligrams (mg)
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| Acceleration due to gravity is --- for all objects | same
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| The force that opposes the motion of objects though air | air resistance
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| What does air resistance depend on? | size, shape, and speed
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| The constant velocity of a falling object | terminal velocity
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| The motion of a body when only the force of gravity is acting on the body | free fall
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| Free fall occurs where there isn't any ---. | air
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| --- objects are in free fall. | orbiting
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| An object is orbiting when... | it is traveling around another object in space
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| The curved path an object follows when it is thrown or propelled near the center of the Earth | projectile motion
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| What are the two components of projectile motion? | horizantal and vertical motion
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| What is Newton's first law? | An object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line unless acted on by ans unbalanced force
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| An object will not be in motion until they are --- or ---. | pushed or pulled
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| Will objects moving at a velocity continue to move at that velocity? | yes
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| An unbalanced force to act on a moving object could be ---. | friction
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| The tendency of an object to resist any change in motion | inertia
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| mass = measure of --- | inertia
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| Changing the motion of an object with less mass is ---. | easier
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| What is Newton's second law? | The acceleration of an object depends on the mass of the object and the amount of force applied
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| What is the first part of Newton's second law? | acceleration depends on mass
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| Mass decreases = acceleration --- | increases
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| What is the second part of Newton's second law? | acceleration depends on force
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| Force increases = acceleration --- | increases
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| What is Newton's third law? | Whenever one object exerts force on a second object, the second object exerts an equal and opposite force on the force.
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| All forces act in ---. | pairs
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| Can you always see the effect of a reaction? | no
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| A quantity defined as the product of the mass and velocity of an object | momentum
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| p= | momentum
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| What is the Law of Conservation of Momentum? | any time objects collide, the total amount of momentum stays the same
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| When two objects stick together, they move as ---- object(s). | one
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| When two objects bounce off of each other the momentum is transferred... | from one object to another object
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| The Law of Conservation of Momentum is similar to Newton's --- law. | third
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| Can momentum be gained or lost? | no
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