a dog has a moment of 60 kilogram meters per second west. The dog has a velocity 3 meters per second west. What is the mass of the dog ?

Slight issue in the question. It should say the dog has a momentum of.. not moment.

Momentum is mass x velocity, so if we know the velocity (it's in the question) we can divide the momentum by the velocity to get the mass.

60 (kg m/s) / 3 (m/s) = 20 kg.

Could well be a spaniel.

To find the mass of the dog, we can use the formula for calculating the moment:

Moment = mass * velocity

Given that the moment of the dog is 60 kilogram meters per second west and the velocity is 3 meters per second west, we can plug in these values to solve for mass.

60 kilogram meters per second = mass * 3 meters per second

To isolate mass, we need to divide both sides of the equation by 3 meters per second:

60 kilogram meters per second / 3 meters per second = mass

This simplifies to:

20 kilograms = mass

Therefore, the mass of the dog is 20 kilograms.