Physical Science Question =D?

Question

Here is the question:

Gabriella weighs 450 N. She climbs a flight of stairs to the height of 3 m. It takes her 5 seconds. How much work does Gabriella do when she climbs the stairs?

Thanks, alot.

Answer 1

work done =m*g*h       (the amount of time doesn't matter for work.  it does for power)

w=450*3

=1350 j