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-----Original Message-----
From: Chris Horton [mailto:ChrisAHorton2@HOTMAIL.COM]
Sent: Saturday, February 02, 2002 7:56 AM
To: PHYS-L@lists.nau.edu
Subject: Re: Car acceleration
One could argue that E is the correct answer: The force of
the foot on the
pedal causes a chain of events with the result that the car
accelerates.
No, I am not just being facetious. The joker in this deck is the word
"causes". This word as commonly used (and I don't remember it being
redefined in any physics curriculum) does not preclude any number of
intermediate agencies, time delays, etc.
A better wording might be "What force acts on the car to accelerate it
forward?"
Chris