Question

When a skydiver jumps from a plane and achieves terminal speed. Which quantity remains constant?

(a) Momentum
(b) kinetic energy
(c) potential energy
(d) both a and b
(e) both a and c
I say kinetic energy, am i right?

Answer 1

Since speed attains a constant "terminal" value, and mass remains the same, both K.E. and momentum remain constant.