Answer: 14,062.5 J
Step-by-step explanation:
We can use the kinetic energy formula to solve. In this formula, m is the mass and v is the velocity. This is given as:
K.E. = 1/2 * m * v²
Given:
K.E. = 1/2 * m * v²
Substitute known values:
K.E. = 1/2 * (45 kg) * (25 m)²
Square:
K.E. = 1/2 * (45 kg) * (625 m²/s²)
Multiply:
K.E. = 14,062.5 kg m²/s² = 14,062.5 J