Question

What is the power delivered by a motor lifting an elevator weighing 1250kg up 89 floors at 16.8 meters per second

Answer 1

F = mg = 1250kg * 9.8N/kg = 12,250 N.

P = F*V = 12250 * 16.8m/s = 205,800 J/s
= 205,800 Watts.