Friday
December 19, 2014

Homework Help: physics

Posted by Noah on Sunday, September 2, 2012 at 10:55pm.

A 0.67 kg rock is projected from the edge of
the top of a building with an initial velocity of
11.6 m/s at an angle 52

above the horizontal.
Due to gravity, the rock strikes the ground at
a horizontal distance of 19.5 m from the base
of the building.
How tall is the building? Assume the
ground is level and that the side of the building is vertical. The acceleration of gravity is
9.8 m/s
2
.
Answer in units of m

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