P1: Forces and Motion KEYWORDS Flashcards

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1
Q

Increase speed

A

Acceleration

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2
Q

Force caused by an object colliding with air particles

A

Air resistance

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3
Q

We say the forces acting on an object are this when it isn’t moving or travelling at a constant speed

A

Balanced

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4
Q

The mass of an object per volume

A

Density

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5
Q

A word to describe the amount a spring stretches by

A

Extension

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6
Q

Force caused by two surfaces moving against each other

A

Friction

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7
Q

Force which gives weight to objects of mass

A

Gravity

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8
Q

“The extension of a spring is directly proportional to the applied force, providing the elastic limit is not exceeded”

A

Hooke’s Law

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9
Q

Unit of force.

A

Newton (N)

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10
Q

Distance / Time

A

Speed

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11
Q

How fast something moves in a particular direction.

A

Velocity

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12
Q

Amount of space an object occupies

A

Volume

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13
Q

Upward force exerted on objects placed in water

A

Upthrust

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14
Q

Type of substance which reduces the amount of friction between two surfaces

A

Lubricant

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15
Q

Type of force, such as friction and upthrust, which relies on objects touching each other

A

Contact

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