1. Suppose a skydiver (mass = 75 kg) is falling toward the Earth. When the skydiver is 100 m above the Earth he is moving at 60 m/s. At this point calculate the skydiver’s…….
a. (2 pts.) Gravitational potential energy
b. (2 pts.) Kinetic energy
c. (2 pts.) Total mechanical energy (The sum of kinetic and potential energy)
PE = mgh
so (75kg)(9.8m/s2)(100m) = 73,500 Joules
KE = 1/2 m * v^2
so (1/2)(75kg)(60m/s)^2 = 135,000 Joules
ME = 208,500 Joules