contestada

A moving company is called into a building and asked to relocate 520 bricks to a location 15 meters above the ground. If each brick is 4 kilograms, what amount of work will be needed to accomplish the task?

A. 588,000 J
B. 305,760 J
C. 203,840 J
D. 229,320 J

Respuesta :

AL2006

Work = (mass of a brick) x (gravity) x (height) x (number of bricks)

That works out to 305,760 Joules (B).