Answer:
To calculate the kinetic energy of an object, you can use the formula:
\[ \text{Kinetic Energy} = \frac{1}{2} \times \text{mass} \times \text{velocity}^2 \]
Given that the mass of the man is \(50 \, \text{kg}\) and the average speed is \(15 \, \text{m/s}\), we can plug these values into the formula to find the kinetic energy:
\[ \text{Kinetic Energy} = \frac{1}{2} \times 50 \, \text{kg} \times (15 \, \text{m/s})^2 \]
\[ \text{Kinetic Energy} = \frac{1}{2} \times 50 \, \text{kg} \times 225 \, \text{m}^2/\text{s}^2 \]
\[ \text{Kinetic Energy} = 0.5 \times 50 \times 225 \, \text{J} \]
\[ \text{Kinetic Energy} = 5625 \, \text{J} \]
Therefore, the kinetic energy of the man is \(5625 \, \text{J}\).
