A fully dressed astronaut, weighing 9.8 x 102 N on
Earth, is about to jump down from a space capsule that has
just landed safely on Planet X. The drop to the surface of X
is 2.40 m, and the astronaut's gravitational potential energy
relative to the surface is 1.10 × 10³ J.
(a) What is the magnitude of the gravitational field strength
on Planet X? (b) What is the astronaut's maximum speed?
