Answer:
Below
Step-by-step explanation:
The man will have Gravitational POTENTIAL energy due to Earth's gravity of mgh
mgh = 68 kg * 9.81 m/s^2 * 6m = 4002 J
The bungee has ELASTIC potential energy of 1/2 k x^2
where x = stretch distance and k = spring constant
= 1/2 (82.6 N/m) ( 50-20 m)^2 = 37170 J
Total = 4002 + 37170 = 41172 J