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How many 360-degree rotations did a bicycle wheel make while rolling 5

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How many 360-degree rotations did a bicycle wheel make while rolling 5  [#permalink]

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New post 28 May 2017, 03:04
3
00:00
A
B
C
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E

Difficulty:

  25% (medium)

Question Stats:

75% (00:47) correct 25% (01:16) wrong based on 55 sessions

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How many 360-degree rotations did a bicycle wheel make while rolling 50 meters in a straight line without slipping?

(1) Each 360-degree rotation took 3 seconds.
(2) The radius of the bicycle wheel was 0.3 meter.

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Re: How many 360-degree rotations did a bicycle wheel make while rolling 5  [#permalink]

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New post 28 May 2017, 03:08
SajjadAhmad wrote:
How many 360-degree rotations did a bicycle wheel make while rolling 50 meters in a straight line without slipping?

(1) Each 360-degree rotation took 3 seconds.
(2) The radius of the bicycle wheel was 0.3 meter.


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Re: How many 360-degree rotations did a bicycle wheel make while rolling 5  [#permalink]

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New post 28 May 2017, 03:11
(1) 3 seconds wont help as we dont know the speed ...insufficient

(2) radius can help us in identifying the perimeter ..one rotation is one perimeter value and hence total distance / perimeter can give us the answer

B is the answer


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Re: How many 360-degree rotations did a bicycle wheel make while rolling 5  [#permalink]

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New post 28 Feb 2019, 05:18
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Re: How many 360-degree rotations did a bicycle wheel make while rolling 5   [#permalink] 28 Feb 2019, 05:18
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