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A 65-kg bicyclist rides his 8.8-kg bicycle with a speed of
Chapter 7, Problem 30P(choose chapter or problem)
Problem 30P
A 65-kg bicyclist rides his 8.8-kg bicycle with a speed of 14 m/s. (a) How much work must be done by the brakes to bring the bike and rider to a stop? (b) How far does the bicycle travel if it takes 4.0 s to come to rest? (c) What is the magnitude of the braking force?
Questions & Answers
QUESTION:
Problem 30P
A 65-kg bicyclist rides his 8.8-kg bicycle with a speed of 14 m/s. (a) How much work must be done by the brakes to bring the bike and rider to a stop? (b) How far does the bicycle travel if it takes 4.0 s to come to rest? (c) What is the magnitude of the braking force?
ANSWER:
Step 1 of 4
The mass of the person is: .
The mass of the by cycle is: .
The initial speed was: .
The final speed is: , as it comes to rest.