Question

I NEED HELP ASAP

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)

Answer 1

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