An aerobatic airplane pilot experiences
weightlessness as she passes over the top of
a loop-the-loop maneuver.
the acceleration of gravity is 9.8 m/s^2
if her speed is 440 m/s at this time, find the
radius of the loop.
answer in units of km.

20 km

Explanation:

Draw a free body diagram.  Weightlessness means there's no normal force.

Sum of forces in the centripetal direction (-y):

∑F = ma

mg = m v² / r

g = v² / r

r = v² / g

r = (440 m/s)² / (9.8 m/s²)

r = 20,000 m

r = 20 km

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.