Answer:
The average power the student expended to overcome gravity is 560W, Watts is a units of work it is Joules /time or kg*[tex]m^{2}[/tex]/ [tex]s^{3}[/tex]
Explanation:
Weight = 700N
[tex]F= m*g*h \\m*g= 700N\\F= 700N*h\\F=700N*8m\\F= 5600 N*m \\F=5600 J[/tex]
The power is the work in (Joules) or (N*m) in a determinate time (s) to get Watts (W) units for work
[tex]Work= \frac{5600 J}{10s} = \frac{5600 \frac{kg*m^{2} }{s^{2} } }{10 s} \\Work= 560\frac{kg*m^{2} }{s^{3} } \\Work =560 W[/tex]
