The ocean may pull away rom the shore as a tsunami approaches?

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?

What is the momentum of a 2 kg object moving at 15 meters per second

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)