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January 26, 2015

January 26, 2015

Posted by **Anonymous** on Saturday, October 31, 2009 at 3:32pm.

kinetic friction= μk(normal force) 35m/s = .62(700X9.8N/kg)

35m/s=.62(6860) .. is this the correct way to do it?

- Physics -
**drwls**, Saturday, October 31, 2009 at 6:02pmNo, that is not the correct way. You don't multiply μk by velocity * normal force to get friction force.

(Friction force)*X = μk*M*g*X

= Intitial K.E. = (1/2)M(Vi)^2

M cancels out. Vi is the initial velocity.

Solve for X.

X = (1/2)(Vi)^2/(μk*g)

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