DV Bike Rider

Posted by possum on April 19, 2004 at 18:10:14:

There's this guy riding a dirt bike up a hill at 30 mph. How fast must he travel down the other side to average 60 mph overall? (Speed is constant on both sides; there's no trick with changing speeds at the top.)

Follow Ups:

• Re: DV Bike Rider - Link . . . Curious 14:24:08 04/21/04 (0)
• Re: DV Bike Rider Curious 14:23:21 04/21/04 (1)
• Re: DV Bike Rider G.U. 10:05:08 04/21/04 (0)
• Re: DV Bike Rider Steven Hawking 00:08:02 04/21/04 (0)
• Re: DV Bike Rider Isaac Newton 15:34:50 04/20/04 (3)
  • Re: DV Bike Rider The Mole 16:33:12 04/20/04 (2)
    • Re: DV Bike Rider The Mole 16:35:55 04/20/04 (0)
    • Re: DV Bike Rider The Mole 16:35:49 04/20/04 (0)
• Re: DV Bike Rider The Northridge Mole 14:54:03 04/20/04 (0)
• Re: DV Bike Rider Thom 14:00:35 04/20/04 (0)
• Re: DV Bike Rider mike 13:54:20 04/20/04 (1)
• Re: DV Bike Rider The Northrdige Mole 12:43:50 04/20/04 (0)
• Re: DV Bike Rider possum The Answer 12:39:46 04/20/04 (1)
• Re: DV Bike Rider EK 10:27:13 04/20/04 (0)
• Re: DV Bike Rider dayton 10:02:28 04/20/04 (0)
• Re: DV Bike Rider The Northridge Mole 22:33:46 04/19/04 (0)
• Re: DV Bike Rider Art 20:58:05 04/19/04 (0)
• Re: DV Bike Rider possum 19:48:08 04/19/04 (0)
• Re: DV Bike Rider possum 19:46:41 04/19/04 (0)
• Re: DV Bike Rider The Northridge Mole 18:54:07 04/19/04 (1)
• Re: DV Bike Rider The Northridge Mole 18:49:04 04/19/04 (1)