Which of the following will lengthen the roll of a toy car on a gravity track?
A. lower the coefficient of friction
B. lower the release point
C. increase the slope of the straightaway by lifting the far end up
Finding the proper coefficient of friction for an application, such as this one, is an example of
A. pure science
B. applied scienceWhich of the following will lengthen the roll of a toy car on a gravity track?
a
b
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