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IGCSE STUDYING > PhysicsWork > Flashcards

PhysicsWork Flashcards

1
Q

Work done

A

the ammount of energy transferred when one body exerts force on another , the energy transeffered by a force when it moves

Work done=Energy transferred

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2
Q

equation for work

A

W=force times distance

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3
Q

Sankey diagram

A

a flow diagram that repersents the principle of conservation of energy the width of the arrows is the same as the total energy

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4
Q

Prinicble of conservation of energy

A

Energy is never destroyed only stored or transferred

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5
Q

Calculate effecieny

A

efficency= useful energy output/total energy output

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6
Q

percentage efficency

A

efficency= useful energy output/total energy output times 100

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7
Q

Kinetic energy

A

energy of moving object

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8
Q

energy

A

quantity that must be changed or transferred to make something happen.

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9
Q

G.P.E

A

energy of something higher in the air due to gravity

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10
Q

Doing work

A

transferring energy by means of a force

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11
Q

change in G.P.E

A

change in MGH

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12
Q

how to find kinetic energy

A

1/2 times mass times vecolicty2

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13
Q

1J is equal to

A

1nm

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14
Q

what is power

A

the rate at wich work is done or the rate at wich energy is transfered

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15
Q

power equation

A

Work done
____________
time taken

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16
Q

what is the equation for momentum

A

p=mass times velocity

17
Q

Units for momentum

A

kg times m/s

18
Q

what is momentum

A

Momentum is a measure of how hard it is to stop a moving object

19
Q

Equation for finding period of pengulum

A

by dividing the distance it is pulled back by the maximum speed

20
Q

equation for finding GPE

A

mass times gravity times height

21
Q

equation for moment

A

force times perpendicular distance

22
Q

The law of conservation of momentum

A

states that the total momentum before a collision must be equal to the total momentum after the collision.

23
Q

equation for momentum

A

mass times velocity

24
Q

impulse is equal too

A

change in momentum

IGCSE STUDYING (26 decks)

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