B) The velocity of a car reduced from 50 km/h to 35 km/h over one minute
Haven't taken physics but I would assume if her friend is standing in front of her that you would add up the speeds and get 30 km/hr.
The horizontal velocity was constant, so:



it traveled 90meters
Humid air has higher pressure because of the heaviness of the water
That the moon has soil within its shadowy craters rich and useful material