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WileyPLUS -) C secure l https://edugenwileyplus.com/edugen/student/mainfr. … a Program: Biochemis ge course review tal A ALEKS-Learn-Rose WileyPLUS: MywsyPLuS Halliday, Fundamentals of Physics, 10e GENERAL PHYSICS (PHYS 211/212/213) , Study & Practice Assignment Gradebook ORION Downloadable eTextbook Open Assignment MESSAGE MY INSTRUCTOR FULL SCREEN PRINTER VERSION | BACK chapter 07, Problem 013 er 07 A luge and its rider, with a total mass of 87 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 27 m/s. If a force slows them to a stop at a constant rate of 3.6 m/s?, (a) what magnitude F Is required for the force, (b) what distance d do they travel while slowing, and (c) what work w is done on them by the force? what are (d) F, (e) d, and (f) W if they, Instead, slow at 7.2 m/s2? Prablem units( (a) Number (b) Number (c) Number Units Units Units OUnits Units (d) Number Problem (e) Number (f) Number Click if you would like to Show work for this question: ope Protiem Problem Question Attempts: o of s used VE FOR LATER | lts by Study

Explanation / Answer

(A) F = m a

F = 87 x 3.6 = 313.2 N

(B) vf^2 - vi^2 = 2 a d

0^2 - 27^2 = 2(-3.6)(d)

d = 101.25 m

(C) W = F.d = F d cos180

W = - 3.17 x 10^4 J Or - 31.7 kJ

(D) F = 626.4 N

(E) 0^2 - 27^2 = 2(-7.2)(d)

d = 50.625 m

(F) Work done will remain same/

W = - 3.17 x 10^4 J Or - 31.7 kJ

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