Answer:
Power = 49 W
Explanation:
power = work / time (J/t or watt)
Joule or J = kg*[tex]m^{2}[/tex]/[tex]s^{2}[/tex]
watt or W = J/s
given:
mass = 2.0 kg
height = 15 m
g = 9.81 m/s2 (assumed)
t = 6 seconds
work = mass*g*h
work = 2.0*9.81*15 = 294.3 kg*[tex]m^{2}[/tex]/[tex]s^{2}[/tex] = 294.3 J
Power = 294.3 J / 6 seconds = 49.1 J/s = 49 W
