Bart runs up a 2. 91-meter high flight of stairs at a constant speed in 2. 15 seconds. If bart's mass is 65. 9 kg, determine the work which he did and his power rating.

new york state wildlife expert richard thomas found that a woodchuck could (and does) chuck around 35 cubic feet of dirt in the course of digging a burrow. thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equivalent to the weight of the dirt, or 700 pounds.