A rock is thrown off a cliff at an angle
of 51° above the horizontal. The cliff is 130 m
high. The initial speed of the rock
is 20 m/s. (Assume the height of the thrower is
negligible.)
(a) How high above the edge of the cliff does the rock
rise (in m)?
(b) How far has it moved horizontally when it is at
maximum altitude (in m)?
(c) How long after the release does it hit the ground
(in s)?
(d) What is the range of the rock (in m)?
(e) What are the horizontal and vertical positions (in m) of the
rock relative to the edge of the cliff at t = 2.0 s,
t = 4.0 s, and t = 6.0 s?
(Assume the +x-direction is in
the horizontal direction pointing away from the cliff,
the +y-direction is up towards the sky,
and x = y = 0 at the point
from which the rock is thrown.)
x(2.0 s)=
y(2.0 s)=
x(4.0 s)=
y(4.0 s)=
x(6.0 s)=
y(6.0 s)=
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