The momentum of an object can be calculated using the formula:
momentum = mass x velocity
Given that the mass of the car is 1,900 kg and the velocity is 20 m/s, we can substitute these values into the formula to find the momentum:
momentum = 1,900 kg x 20 m/s = 38,000 kg.m/s
Therefore, the correct answer is:
O 38,000 kg.m/s