Homework Help: physics

Posted by Anonymous on Sunday, October 17, 2010 at 2:37pm.

The escalator that leads down into a subway station has a length of 29.5 m and a speed of 1.6 m/s relative to the ground. A student is coming out of the station by running in the wrong direction on this escalator. The local record time for this trick is 11 s. Relative to the escalator, what speed must the student exceed in order to beat this record?

physics - Damon, Sunday, October 17, 2010 at 2:44pm
student speed = s
student speed over ground = (s-1.6)
29.5 = (s-1.6)(11)
solve for s
physics - Anonymous, Friday, September 23, 2011 at 1:43pm
1.67

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