What is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s? a. 57 w c. 560 w b. 240 w d. 670 w

Option (c) is correct. Average power supplied by the person=560 W

Explanation:

mass of person=60 Kg

vertical distance= d= 4 m

Time= 4.2 s

force= mg= 60 (9.8)=588 N

Work done= force x distance

W=588 (4)=2352 J

Now power=P= work done/ time

P=2352/4.2

P= 560 W

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it