Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Forces and Friction
Your teenage son has a fast car.
He knows that friction is determined by the weight of the car over the wheels, the "normal" force. He also knows that additional weight means that the car can't accelerate as fast, but he's also having problems with the rear tires spinning out. He's convinced that having Fat Eddie sit in the back will help his quarter-mile time.
Will the extra weight help him or hurt him?
.
Source:
T.R.Milne
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