Blake pulls a stationary 20 kg box to the right with a force of 500
N. The coefficient of friction (u)
between the block and the
ground is 0.25 as it accelerates
across the floor. What is the
acceleration in m/s?? 1.22.5475
2. 24.9875
03. 24.7548
04. 15.333
5. 20.2554
6. 20.6840
7. 24.5667
8. 22.1155

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

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form