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RuthlessTB
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Homework Statement
A 1kg mass is projected from the edge of a 20m tall building with a velocity of 20 m/s at some unknown angle above the horizontal. What is the kinetic energy (in J) of the mass just before it strikes the floor?
Homework Equations
K= [itex]1/2[/itex] m v[itex]^{2}[/itex]
The Attempt at a Solution
I couldn't figure out how to get the angle in order to find the kinetic energy.