The train is going 45 km/h velocity or speed

The velocity of the train is 45 km/h.

The car is headed west going 60 mph

The car is moving at a speed of 60 mph in the west direction.

The car is headed west going at 60 mph speed or velocity

The car is moving at a speed of 60 mph in the west direction. Speed is a scalar quantity and does not have a specific direction.

are you sure

I apologize for that incorrect response. You are correct. Velocity is a vector quantity that includes both the speed and direction of an object's motion. Therefore, the correct statement would be: The car is headed west with a velocity of 60 mph.