The kinetic energy (KE) of an object can be calculated using the formula:
KE = (1/2) * m * v^2
where m is the mass of the object and v is its velocity.
In your case, the total mass is given as 50,000 kg, and the velocity is 250 m/s. Plugging these values into the formula, we get:
KE = (1/2) * 50,000 kg * (250 m/s)^2
KE = (1/2) * 50,000 kg * 62,500 m^2/s^2
KE = 1,250,000,000 J
Therefore, the kinetic energy of the object with a mass of 50,000 kg moving at a velocity of 250 m/s is 1,250,000,000 Joules (J).