1. Joined
    24 Nov '04
    Moves
    63
    23 Mar '05 21:09
    There is a circular track 1 mile long. A man must complete the track twice (thus doing 2 miles). Assuming he travels at 30mph on the first lap, what speed must he average on the second lap to finish with an overall average speed of 60 mph?

    Sorry if this one's been done already!
  2. In your face
    Joined
    21 Aug '04
    Moves
    55993
    23 Mar '05 21:26
    Well to average 60 mph he must complete two miles in two minutes.

    So if he travels at 30 mph for the first lap this will take 2 minutes in itself so........... that leaves no time at all to complete the second lap.
    Enter Einstein or a famous footballer with nice Porche.
  3. Standard memberPBE6
    Bananarama
    False berry
    Joined
    14 Feb '04
    Moves
    28719
    23 Mar '05 21:49
    Can't win, don't try!
  4. Standard memberAlcra
    Lazy Sod
    Everywhere
    Joined
    12 Oct '04
    Moves
    8623
    24 Mar '05 07:58
    Originally posted by borissa
    There is a circular track 1 mile long. A man must complete the track twice (thus doing 2 miles). Assuming he travels at 30mph on the first lap, what speed must he average on the second lap to finish with an overall average speed of 60 mph?

    Sorry if this one's been done already!
    90mph
  5. Standard memberXanthosNZ
    Cancerous Bus Crash
    p^2.sin(phi)
    Joined
    06 Sep '04
    Moves
    25076
    24 Mar '05 08:39
    Originally posted by Alcra
    90mph
    Bzzt! Wrong.

    (assuming non-sarcasm (does that have a hyphen? (does it matter?)))
  6. In your face
    Joined
    21 Aug '04
    Moves
    55993
    24 Mar '05 13:32
    Originally posted by PBE6
    Can't win, don't try!
    I'm sure i said that??????
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