Problem data: m (train tractor mass) = 20 t (in SI m = 20 * 10 ^ 3 kg); V (speed at which the tractor is moving) = 80 km / h (in SI V = 22.2 m / s).
To calculate the momentum of the train tractor, you must use the formula: P = m * V.
Calculation: P = 20 * 10 ^ 3 * 22.2 = 444 * 10 ^ 3 kg * m / s.
Answer: The train tractor has an impulse of 444 * 10 ^ 3 kg * m / s.
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