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operation grade 9 > physics equations > Flashcards

physics equations Flashcards

1
Q

what is the equation for distance travelled?

A

distance travelled = average speed * time

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2
Q

what is the equation for acceleration?

A

acceleration= change in velocity/time taken a= (v-u)/t

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3
Q

what is the equation for force?

A

force=massacceleration F=ma

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4
Q

what is the equation for weight?

A

weight=massgravitational field strength W=mg

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5
Q

what is the equation for efficiency?

A

efficiency= useful energy transferred by device/ total energy supplied to device

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6
Q

what is the equation for momentum?

A

momentum= massvelocity p=mv

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7
Q

what is the equation for wave speed?

A

wave speed=frequencywavelength v=f λ
wave speed= distance over time v=x/t

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8
Q

what is the equation for work done?

A

work done=forcedistance moved in direction of the force E=Fd

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9
Q

what is the equation for change in GPE?

A

change in GPE=massgravitational field strengthchange in height GPE=mgh

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10
Q

what is the equation for kinetic energy?

A

1/2mass(speed)^2 KE=1/2mv^2

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11
Q

what is the equation for power?

A

power=work done/time taken

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12
Q

what is the equation for energy transferred?

A

energy transferred= charge movedpotential difference E=QV

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13
Q

what is the equation for charge?

A

charge=currenttime Q=It

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14
Q

what is the equation for potential difference?

A

potential difference=currentresistance V=IV

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15
Q

what is the equation for power?

A

power=energy transferred/time taken P=E/t

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16
Q

what are the equations for electrical power?

A

electrical power=currentpotential difference P=IV
electrical power=current^2resistance P=I^2R

17
Q

what is the equation for force exerted on a spring?

A

force exerted on a spring=spring constantextension F=kx

18
Q

what is the equation for a moment of a force?

A

moment of a force=force*distance normal to the direction of the force

19
Q

what is the equation for pressure?

A

pressure=force normal to surface/area of surface P=F/A

20
Q

What is the equation for frequency?

A

1/time period

operation grade 9 (13 decks)

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