Motion And Forces Chapter 4 and 5 Flashcards

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1
Q

Stored energy

A

Potential energy

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2
Q

The energy of motion

A

Kinetic energy

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3
Q

A law stating that no matter how energy is transferred or transformed, all of the energy is still present in one form or another

A

Conservation of energy

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4
Q

The unit of measurement of power

A

Watt

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5
Q

A unit used to measure energy and work

A

Joule

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6
Q

The unit of measurement of power for engines and motors

A

Horsepower

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7
Q

A combination of kinetic energy and potential energy an object has

A

Mechanical energy

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8
Q

The use of force to move an object over a distance

A

Work

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9
Q

The rate at which work is done

A

Power

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10
Q

Any device that makes doing work easier

A

Machine

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11
Q

The number of times a machine multiplies the input force

A

Mechanical advantage

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12
Q

The percentage of the input work done on a machine that the machine can return in output work

A

Efficiency

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13
Q

One of the basic machines on which all other mechanical machines are based

A

Simple machine

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14
Q

A solid bar that rotates rotates, or turns, around a fixed a point

A

Lever

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15
Q

A fixed point around which a lever rotates

A

Fulcrum

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16
Q

A simple machine that is a wheel attached to a shaft or axle

A

Wheel and axle

17
Q

A wheel with a grooved rim that turns on an axle

A

Pulley

18
Q

A simple machine that is a sloping surface

A

Inclined plane

19
Q

A simple machine that has a thick end and a thin end

A

Wedge

20
Q

A simple machine that is an inclined plane wrapped around a cylinder

A

Screw