Students in a physics class were given several objects and asked to explore the nature of objects in free fall. The students drop each object from a height of 1.5m. They use a timer to determine how long it takes each object to hit the ground. One of the students forgets to record the data for the time it took the samples of paper to fall. Their results are presented in the table below:

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 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

What are the north and south poles of a solenoid change with?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?