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h. acc physics > Unit 4 Test: Energy > Flashcards

Unit 4 Test: Energy Flashcards

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1
Q

work equation

A

Fd(cosø)
-force
-displacement
ø= angle between F and displacement

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2
Q

is work a scalar or vector force?

A

scalar, it has no direction

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3
Q

what is mechanical energy

A

energy an object possess due to its motion and position.

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4
Q

types of mechanical energy

A

kinetic energy(depends on motion), elastic energy depends on position), potential energy (depends on position)

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5
Q

is energy scalar or vector

A

scalar

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6
Q

kinetic energy +mass

A

more mass, more kinetic energy

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7
Q

kinetic energy+speed

A

more speed, more kinetic energy

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8
Q

kinetic energy def

A

anything moving has kinetic energy, if object is not moving it doe snot have kinetic energy

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9
Q

kinetic energy equation

A

K=1/2mv^2

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10
Q

gravitational potential energy (ug)

A

when an object has potential to fall, at a height above 0

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11
Q

GPE +mass

A

more mass, more GPE

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12
Q

GPE+ heigh

A

more heigh, more GPE

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13
Q

GPE + gravitational field strength

A

more gravitational field strength, more GPE

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14
Q

gravitational potential energy (Ug) equation

A

Ug=mgh

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15
Q

elastic potential energy

A

energy stored in an elastic object when it has bean stretched OR compressed, thereby displaced from equilibrium

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16
Q

EPE + stretch/compression

A

more stretch/compression, more EPE

17
Q

EPE + spring constant

A

stronger spring constant, more EPE

18
Q

spring constant

A

K, strength/stiffness of an elastic object

19
Q

elastic potential energy equation

A

Us=1/2kx^2
x= how much you can stretch/condense string

20
Q

conservative forces

A

conserve TME, also called internal forces
-F gravitational, spring constant

21
Q

non-conservative forces

A

do not conserve TME, convert energy to something else
-work occurs, (work external)
-friction, applied force, normal force, tension, air resistance

h. acc physics (7 decks)

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