that moves along the track shown in the figure below Assume all friction is negi
ID: 1784165 • Letter: T
Question
that moves along the track shown in the figure below Assume all friction is negigible and ignore the kinetic energy of the roller coaster's whreels. Assume the roller cosster starts with a m/s m/s speed of 20 m's at point A. Find the speed of the roer coaster when it reaches locations 8 and C. (Assume tA 48 m and tg- 24 m.) Noed Help? Tor Mount Mckinley (also called Denakj is the tallost mauntain In North America, with a height of 6,200 m above sea level. f a person of mass 108 kg walks from sea level to the top of Mount Mckinley, how uch work is done by gravity on the person? Need Help?Explanation / Answer
9.
m = mass = 108 kg
Fg = force of gravity = mg = 108 x 9.8 = 1058.4 N
h = height = 6200 m
work done is given as
W = Fg h Cos180
W = 1058.4 x 6200 (-1)
W = - 6.6 x 106 J
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