circular motion Flashcards

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1
Q

time for 1 revolution

A

period

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2
Q

nukber of revolutions per second

A

frequency

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3
Q

instantaneous speed of object moving in a circular path

directed at a tangent to circular path

A

tangential speed

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4
Q

netforce that causes circular motion

A

centripetal force

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5
Q

acceleration caused by change in direction inward for an object miving in a curcular path

A

centripetal acceleration

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6
Q

tendency of an ibject to continue its state of motion

A

inertia

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7
Q

objects move in a circular path at a constant speed

A

uniform circular motion

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8
Q

formula for circumference

A

c = 2pir

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9
Q

in circular motion what is the direction of an objects velocity

A

at a given instant, tangent to circular path

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10
Q

what does tangent mean

A

touches curve at exactly one point

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11
Q

in curcular motion what is the direction of centripetal force

A

inward

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12
Q

what vector is tangent to the path of circular motion

A

velocity/speed

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13
Q

in curcukar motion what is the direction of centripetal acceleration

A

inward

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14
Q

describe a situation where centripetal force and acceleration are in opposite directions

A

none

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15
Q

name two vectors that are perpendicular to each othher

A

fc and v

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16
Q

name two vectors that are parallel to each ither

A

fc and ac

17
Q

objects moving in a circualr oath always experience

A

centripetal acceleration

18
Q

a stopper is whirled around at a constant speed what is true about the stoppers velocity

A

the velocity is constantly changing

19
Q

a car travels around a curve with constant speed what statement is true about the acceleration

A

acceleration is directed towards the center of the path

20
Q

a car travels around a curve with constant speed what is true about the velocity

A

velocity is directed at a tangent to the curve

21
Q

how is centripetal force related to speed squared

A

they are directly proportional

22
Q

how is centripetal force related to radius

A

inversely

23
Q

how is centripetal force related to velocity

A

directly

24
Q

constant or changing : frequency

A

constant

25
Q

constant or changing: period

A

constant

26
Q

constant or changing:velocity

A

changing

27
Q

constant or changing: centripetal acceleration

A

constant

28
Q

constant or changing: centripetal force

A

constant