In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
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Question: Question: Marie is rolling cards down a hill. She wants to know which cart will get to the bottom of the hill slower, an empty cart, or a full cart? The cart that will finish first will have a mass that is 
 Answer: lower

Answer: An object has greater momentum if it has greater mass, greater velocity, or both.


Question: Question: If Milo is holding two objects close together and he decides to move them closer together, what happens to the gravitational force between the objects? 
 Answer: increases

Answer: The gravitational force between two objects decreases as the objects move further apart.


Question: Question: Suppose Jim was decided to use more electricity in his day to day activities. What would happen to his pollution output? 
 Answer: increased

Answer:
We need to reduce our electricity consumption in order to reduce pollution.