.Answer:
1111.11 W
Explanation:
Power is the rate of doing work with respect to time, its S.I unit is in watts but it can also be expressed in J/s. Power is calculated using the formula:
[tex]Power=\frac{energy}{time}[/tex]
Power is also the rate at which energy is used per second.
Given that mass (m) = 100 kg, height (h) = 50 m, acceleration due to gravity (g) = 10 m/s and time = 45 s.
The man climb the stairs and experiences a potential energy, hence:
potential energy = mgh = 100 * 10 *50 = 50000 J,
[tex]Power=\frac{energy}{time}=\frac{50000}{45}=1111.11\ W[/tex]
