A freight train has two engines, each with a mass of 50,000kg, pulling 15 freight cars, each having a mass of 40,000kg.The
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total mass of the freight train can be calculated by adding the masses of the engines and the freight cars together.
First, let's calculate the mass of the engines:
Mass of each engine = 50,000 kg
Since there are two engines, the total mass of the engines is:
Total mass of the engines = 50,000 kg + 50,000 kg = 100,000 kg.
Now, let's calculate the mass of the freight cars:
Mass of each freight car = 40,000 kg
Since there are 15 freight cars, the total mass of the freight cars is:
Total mass of the freight cars = 40,000 kg * 15 = 600,000 kg.
Finally, we can calculate the total mass of the freight train by adding the mass of the engines and the freight cars together:
Total mass of the freight train = Mass of the engines + Mass of the freight cars
Total mass of the freight train = 100,000 kg + 600,000 kg = 700,000 kg.
Therefore, the total mass of the freight train is 700,000 kg.