Y1 Equations Flashcards

1
Q

Pythagoras?

A

C2 = b2 + a2

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2
Q

Sin(ang)

A

opp/hyp

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3
Q

Cos(ang)

A

adj/hyp

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4
Q

Tan(ang)

A

opp/adj

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5
Q

Speed

A

distance/time

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6
Q

velocity

A

displacement/time

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7
Q

acceleration

A

change in velocity/change in time

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8
Q

force

A

mass x acceleration

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9
Q

momentum

A

mass x velocity

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10
Q

impulse (2)

A

force x time or m(vf-vi)

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11
Q

pressure

A

force/area

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12
Q

work

A

force x distance

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13
Q

power

A

work/time

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14
Q

kinetic energy

A

1/2 mass x velocity2

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15
Q

potential energy

A

mass x gravity x height

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16
Q

strain energy

A

1/2 stiffness x deformation2

17
Q

friction

A

u x reaction force

18
Q

restitution

A

square root: hb/hd