-) c I Not tenure I www.webaasi\' dep 18325147 c Show My Work op A 4.80-kg objec

Question

-) c I Not tenure I www.webaasi' dep 18325147 c Show My Work op A 4.80-kg object is initially moving so that its x-component of velocity i .00-m/s and ycompenent ot velocily a) what is the kinetic energy of he object at this time? 1.89 m/3 Your reaponne differs Tron the corract aneswer by more thon 1sDoubia heck your calculations 3 Find the change in kinetic anergy of the object iE its velecity chaeothat its new component io t.50 rus and t is 5.00 m/s xc nour response diners trom the oorratt answer by mrethaniowd Show My Work topto Pracica Anather Version r . seglt an, …in 5.60 kg k releas ed fron po nt and alides on the friction ess tax as shown a the figure been A bead of mass

Explanation / Answer

a) vix = 6 m/s

viy = -1.8 m/s

vi = sqrt(6^2+1.8^2) = 6.26 m/s

kinetic energy ki = 1/2*4.8*6.26^2 = 94.2 J

b) vfx = 8.5 m/s

vfy = 5 m/s

vf = sqrt(8.5^2+5^2) = 9.86 m/s

kf = 1/2*4.8*9.86^2 = 233.4 J

change in kinetic energy = kf-ki = 139.2 J

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