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help with this homework please! . CE Predict/Explain Two drivers traveling side-

ID: 1791005 • Letter: H

Question

help with this homework please!

. CE Predict/Explain Two drivers traveling side-by-side at the d suddenly see a deer in the road ahead of them and begin Driver 1 stops by locking up his brakes and screeching to a alt: driver 2 stops by applying her brakes just to the verge of lock- at the wheels continue to turn until her car comes to a com- stop. (a) All other factors being equal, is the stopping distance of driver 1 greater than, less than, or equal to the stopping distance of 22 (b) Choose the best explanation from among the following I. Locking up the brakes gives the greatest possible braking force. ee same speed g, so th te driver II. The same tires on the same road result in the same force of III. Locked-up brakes lead to sliding (kinetic) friction, which is friction. less than rolling (static) friction.

Explanation / Answer

When brakes are locked ,it will slide so friction opposing the motion will be sliding friction but if wheels are rolling ,it will experience rolling friction .We know sliding friction is much more than rolling friction so option (iii) is correct