9:18 - f PA . . ONall 78% X SOLVED: A 200 k... numerade.com Numerade Sign up E . 22 people are viewing now A 200 kg roller coaster starts from rest at the top of a hill 50 m above... A 200 kg roller coaster starts from rest at the top of a hill 50 m above the ground. It rolls toward the ground without any friction until it reaches ground level. Then the brakes are applied, stopping the coaster after a 30 m roll along flat ground. Assume the acceleration from gravity is 10 m/s^2. How much work was done by the brakes? a. -1.0x10^5 Jb. -1.6x10/4 J c. -1.0x10/4 J Show less Submitted by Stephanie D. . Aug. 17, 2021 . 06:15 a.m. Ask Ace Anything Explain the concept Common mistakes Tips for this question A