Racecar

Matthes · 2003-06-24, 08:27

Hi,

this one is pretty easy, but anyways.

A racecar drives a 2 kilometers long track and takes 4 minutes to complete it (yeah I know that is slow, consider he was driving backwards or something ;) ) At what speed does he have to take a second lap, to get an average speed of 60 km/h for both laps?

Have fun, Matthes

hyh1048576 · 2003-06-24, 09:28

That's IMPOSSIBLE!!!!!!
Two laps is 4 km.So it must finish it in 4 min to get an average speed at 60 km/h.But its first lap has already taken the 4 min!!!Hence it has no time to run the second lap!

Matthes · 2003-06-24, 09:50

And that is the correct answer. :D

2003-06-24, 08:27	#1
Matthes May 2003 2³×3 Posts	Racecar Hi, this one is pretty easy, but anyways. A racecar drives a 2 kilometers long track and takes 4 minutes to complete it (yeah I know that is slow, consider he was driving backwards or something ;) ) At what speed does he have to take a second lap, to get an average speed of 60 km/h for both laps? Have fun, Matthes

2003-06-24, 09:28	#2
hyh1048576 Jun 2003 64₁₀ Posts	That's IMPOSSIBLE!!!!!! Two laps is 4 km.So it must finish it in 4 min to get an average speed at 60 km/h.But its first lap has already taken the 4 min!!!Hence it has no time to run the second lap!

2003-06-24, 09:50	#3
Matthes May 2003 2³×3 Posts	And that is the correct answer. :D