Physics - Chapter 2 Flashcards by Gracie Costello

Rate of change of position with time

Velocity

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Rate of change of velocity with time

Acceleration

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Force on the body caused by the pull of gravity on it

Weight

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Product of the mass of an object and its velocity

Momentum

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Product of force and distance

Work

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Quotient of work by time

Power

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v=d/t

Velocity

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v(av) = vi + vf / 2

Average velocity

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a=vf - vi / t

Acceleration

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F = ma

Force

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Wt = mg

Weight

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p = mv

Momentum

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w = Fd

Work

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P = w/t
P = Fd/t

Power

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KE = 1/2mv^2

Kinetic energy

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PE = mgh

Potential energy

Unit of velocity

m/s

Unit of acceleration

m/s^2

Unit of force

Newton

Unit of weight

Newton

Unit of work

Joule

Unit of power

Watt (W)

Unit of potential energy

Joule

Inertia - a body will remain at rest or will continue to move with constant velocity unless acted on by an external force

Newton’s first law

Force - the force that acts on an object is equal to the mass of the object multiplied by the acceleration produced

Newton’s second law

Action/reaction - for every action there is an equal and opposite reaction

Newton’s third law

Based on the vibration of atoms of cesium

Second

The velocity of light is constant and symbolized by:

c = 3 x 10^8 m/s

The kinetic energy of the random motion of molecules

Heat

1 kilogram = mass of 1000cm^3 of water at 4 degrees

Mass

1 meter = distance travelled by light in 1/299 792 468s

Length