barring air resistance. [day 25]
Fg < Fapp
to fly:
the force of gravity
must be exceeded
by an upward (outward)
force—
Fg = mg
Fg = (50.0 kg)(-9.81 N/kg)
Fg = -470.5 N
a girl with assumed mass
of 50-kilograms
experiences
a gravitational force
of 471 N downward (inward).
Fg < Fapp
471 N < Fapp
a girl
with assumed mass
of fifty kilograms
who experiences more
than four hundred and seventy-one
newtons of force
upwards and outwards
will feel the ground
part from her feet.
