a. You're biking down a hill at 11.375 m/s. You want to apply the brakes and stop over a distance of 7.35 m. Your mass with the bike is 73.125 kg. The angle of incline of the road is 15.7 degrees. What is your acceleration across the surface of the ramp? Take up the ramp to be positive and down the ramp to be negative. Previous submissions: 8.8 b. What is FN of the road on the bike? Previous submissions: 689.89 c. What must be Frs to achieve the desired acceleration? Previous submissions: 643.5 d. What must be us? (It's us even though the bike is moving becuase it's not slipping across the surface of the road.) correct correct

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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PLease help me in answering parts c and d. The answers for parts a and b were correct, but I'm unsure what to do about parts c and d where I got the incvorrect answers 643.5 and 0.933

7.
a. You're biking down a hill at 11.375 m/s. You want to apply the brakes and stop over a distance of 7.35 m. Your mass with the bike is 73.125 kg. The angle of incline of the road is 15.7 degrees. What is your acceleration across
the surface of the ramp? Take up the ramp to be positive and down the ramp to be negative.
Previous submissions:
8.8
b. What is FN of the road on the bike?
Previous submissions:
689.89
c. What must be Ffs to achieve the desired acceleration?
Previous submissions:
643.5
d. What must be us? (It's us even though the bike is moving becuase it's not slipping across the surface of the road.)
correct
correct
Transcribed Image Text:7. a. You're biking down a hill at 11.375 m/s. You want to apply the brakes and stop over a distance of 7.35 m. Your mass with the bike is 73.125 kg. The angle of incline of the road is 15.7 degrees. What is your acceleration across the surface of the ramp? Take up the ramp to be positive and down the ramp to be negative. Previous submissions: 8.8 b. What is FN of the road on the bike? Previous submissions: 689.89 c. What must be Ffs to achieve the desired acceleration? Previous submissions: 643.5 d. What must be us? (It's us even though the bike is moving becuase it's not slipping across the surface of the road.) correct correct
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