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August 1, 2015

Homework Help: Physics

Posted by Stuck on Thursday, July 8, 2010 at 4:37pm.

I'm learning about Newton's Laws of Motions and I'm having trouble understanding these questions:

"A rear-end collision between a soft-drink truck and a car occurs. The truck driver claims the car backed into him, while the auto driver claims that the truck hit him from behind. The only evidence is that quite a number of soft-drink bottles fell forward in the truck. From the evidence, can you tell who was at fault?"

I think it's a car's fault, because if the truck moved forward (and hit the car), then the bottles would have fell backwards...

"What is the principle behind a magicians ability to pull a tablecloth from beneath china and glassware without breaking them?"

I'm assuming this has to do with Newton's 1st Law, and how objects that aren't moving don't want to move.

"Explain why when you walk on a log floating in water, the log moves backward as you move forward."

This one I don't know how to explain.

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