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a bus slams on brakes to avoid an acciden.the tread marks of the tires are 80 meter long. if coefficient of kinetic friction is 0.7, what was the speed before applying the brakes?

User Icon for Damon Damon answered
14 years ago

Force * distance = change in KE

m g * .7 * 80 = (1/2) m v^2

m cancels, solve for v