A sky diver of mass 79.5 kg jumps from a slow-moving aircraft and reaches a terminal speed of 53.0 m/s.
(a) What is the acceleration of the sky diver when her speed is 30.0 m/s?
What is the drag force on the diver when her speed is the following?
(b) 53.0 m/s (answer in N)
(c) 30.0 m/s (answer in N)
The Attempt at a Solution
I found parts a and b (correct on Webassign), but I can't get part c.):
a.) a= 6.792 m/s2
b.) 779.1 N
Would part c.) just be: mg-ma???
= 239.096 (WebAssign says it's incorrect)