having trouble, WFd, im just not sure how to figure out speed and PE using this info? other formulas?after a screetching halt a car leaves skid marks that are 65m long. The coefficient of kinetic friction b/t the tires and the road is .71 How fast was the car going before the driver applied the brakes?A 75kg skier rides a 2830m long lift to the top of a mountain. The lift makes an angle of 14.6degrees with the horizontal. What is the change in the skiers gravitational potential energy?
Online, is not the way to learn how to ride a motorcycle. If you don't want to take a motorcycle safety coarse, or can't afford to do so. Then please, find some one who can show you how to ride. Trying to learn online, can get you hurt or killed. Before you try so ride a motorcycle, try working on your grammar. You don't have to down shift at all, or down shift after you've stopped, or as you are braking. It doesn't matter.
Frictional force on the car mgμ Deceleration of car - (mgμ) / m - gμ v^2 - u^2 2as u^ 2gμs u √(2gμs) √(2*9.8*0.71*65) 30 m/s. (75) x (9.8) x(2830 sin 14.6°) J 524317 J
yeah pull the clutch in hit the brake and put ur foot down to **** down u can do that it wont break lol
