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An air-powered rifle was shot at 2 different targets. What was the ave

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An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 07 May 2017, 13:54
1
4
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

66% (01:12) correct 34% (01:17) wrong based on 203 sessions

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Re: An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 07 May 2017, 23:15
for average speed you need total distance travelled and total time taken..

stat1: relative distance given.. not suff

stat2: speed of the bullet is given.. not suff

combined no useful info
ans E
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Re: An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 20 Jul 2017, 18:26
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There is no info about the distance, hence E.
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Re: An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 20 Jul 2017, 18:34
1
Shouldnt it be B ?
300 ft away in 0.5 seconds .

Are we assuming that bullet's speed will not be constant and both bullets could have different speed right out of the barrel ?
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Re: An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 20 Jul 2017, 22:58
mbsingh wrote:
Shouldnt it be B ?
300 ft away in 0.5 seconds .

Are we assuming that bullet's speed will not be constant and both bullets could have different speed right out of the barrel ?


Yes, your assumption seems right.
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Re: An air-powered rifle was shot at 2 different targets. What was the ave  [#permalink]

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New post 25 Jul 2017, 17:02
given that one bullet will travel just 1 sec more than the other(for 600ft extra) , is it not safe to assume that a the same air-powered rifle will not be firing bullets at different speeds.
Even if it does, with slightly different speeds, still the average speed can more or less be constant.
The point I am trying to make here is, such problems always needs us to make some assumptions(else the answer will always be E), there are too many factors/conditions that can be considered.
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Re: An air-powered rifle was shot at 2 different targets. What was the ave   [#permalink] 25 Jul 2017, 17:02
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