Calculate the velocity of a train that is headed south and has a mass of 4500 kilograms and whose momentum is 879,000 kg•m/sec

195 m/s south

Explanation:

Momentum = mass × velocity

879000 kg m/s = (4500 kg) v

v = 195.33 m/s

Rounding, the velocity is approximately 195 m/s south.

Explanation:

The equation for momentum is

Since momentum is a vector, we must specify both speed and direction.

Data:

p = 879 000 kg·m·s⁻¹ south

m = 4500 kg

Calculation:

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