In which of the following situations is the listed force doing negative work on the object?
a) A rocket engine pushing exhaust gases backward and accelerating the rocket forward (force by the engine on the rocket)
b) A catcher’s glove bringing a fast-moving baseball to rest (force by the glove on the ball)
c) A person lifting a book upward at constant speed (force by the person on the book)
d) Earth’s gravity acting on a satellite as the satellite falls toward Earth (force by Earth on the satellite)