Acannon fires a 0.652 kg shell with initial
velocity vi = 12 m/s in the direction = 61 ◦
above the horizontal.
the shell’s trajectory curves downward be-
cause of gravity, so at the time t = 0.473 s
the shell is below the straight line by some
vertical distance h.
find this distance h in the absence of
air resistance. the acceleration of gravity is
9.8 m/s2 .
answer in units of m