Question

El Capitan in Yosemite National Park is 3593 ft high. How long would it take a carabiner to fall freely from the top?

Answer 1

s = 3593
a = 9.8
t = ?
u = 0
v = ?

Find the "v" first.

\[v^2 = u^2 + 2as\]\[v = \sqrt{0^2+2(9.8)(3593)}\]\[v = 265.37ft/s\]

Answer 2

Now use this to find time taken.
using

\[v = u + at\]

Answer 3

time of free fall \[\sqrt{{2h \over g}}\]
h = 3593 ft = 1095 m
g = 9.81 ms^-2

Answer 4

about 15 seconds.