Which of these is a contact force? a. earth's attraction of the moon b. force of a magnet that attracts paper clips c. force of a bat on a baseball

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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