Force Vocabulary Flashcards

0
Q

Net force

A

Sum of all the forces that are acting on an object

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1
Q

Force

A

A push or pull exerted on an object

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2
Q

Friction

A

Force that opposes the sliding motion between two touching surfaces

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3
Q

Gravity

A

Attractive force between two objects that depends on the masses of the objects and the distance between them

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4
Q

Field

A

A region of space in which every point has a physical quantity, such as a force

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5
Q

Weight

A

Gravitational force exerted on an object

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6
Q

Newton’s first law of motion

A

States that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced force acts on it

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7
Q

Newton’s second law of motion

A

States that the acceleration of an object is in the same direction as the net force on the object and that the acceleration equals the net force divided by its mass

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8
Q

Newton’s third law of motion

A

States that when one object exerts a force on a second object the second object exerts a force on the first object that is equal in strength and in opposite direction

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9
Q

Inertia

A

Tendency of an object to resist any change in its motion

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10
Q

Air resistance

A

Force that opposes the motion of objects that move through the air

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11
Q

Terminal velocity

A

The maximum speed an object will reach when falling through a substance, such as air

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12
Q

Free fall

A

describes the fall of an object on which only the force of gravity is acting

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13
Q

Centripetal force

A

A force that is directed toward the center of a curved or circular path

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14
Q

Law of conservation of momentum

A

States that if no external forces act on a group of objects, their total momentum does not change

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