Ireally don’t know the answer or the steps to work it out can someone ?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?