Homework Help: Physical Science

Posted by Donna on Friday, March 20, 2009 at 10:32am.

A 30 kg girl and a 25 kg boy face each other on friction-free roller blades. The girl pushes the boy, who moves away at a speed of 1.0 m/s. The girl speed is _______ m/s?

Physical Science - drwls, Friday, March 20, 2009 at 6:29pm
The girl's momentum is equal and of opposite sign, so the total momentum remains zero.
30*Vgirl = 25*1.0

Solve for Vgirl
Physical Science - <script type="text/javascript"> alert("TITTTTIIEESSS)"</script>, Thursday, July 23, 2009 at 5:35pm
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Physical Science - <script type="text/javascript"> alert("TITTTTIIEESSS)"</script>, Thursday, July 23, 2009 at 5:35pm
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Physical Science - <script type="text/javascript"> alert("TITTTTIIEESSS)"</script>, Thursday, July 23, 2009 at 5:35pm
meow
Physical Science - <script type="text/javascript"> alert("TITTTTIIEESSS)"</script>, Thursday, July 23, 2009 at 5:35pm
meow
Physical Science - <script type="text/javascript"> alert("TITTTTIIEESSS)"</script>, Thursday, July 23, 2009 at 5:38pm
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Physical Science - <script type=, Thursday, July 23, 2009 at 5:41pm
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Physical Science - <<SCRIPT>alert("XSS");//<</SCRIPT>, Thursday, July 23, 2009 at 5:43pm
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Physical Science - <script>alert("hi")</script>, Tuesday, June 28, 2011 at 8:12pm
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Physical Science - <plaintext>, Tuesday, June 28, 2011 at 8:12pm
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