I think the answer is A.
A. the speed of the walkway multiplied by the speed at which she is walking
The speed she is walking accelerates her speed by the base speed of the walkway.
Frostbite to the skin and Severe burning to the eyes.
The molecular formula would be Li2CO3
Mass, if you know what element you are working with.
Carbon is not combustible because when it combines with oxygen its energy increases thus it doesnt combust.