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.

Ex Input:
Question: Two cars are going down the road, one weighs a ton, the other weighs two tons. If both crash, the car weighing two tons will have a momentum that is
Answer: larger

Ex Output:
The more mass a moving object has or the faster its moving, the greater its momentum.

Ex Input:
Question: By removing a pound of salt from a bucket of fresh water, could you cause the density of the water to
Answer: decrease?

Ex Output:
Water density increases as salinity and pressure increase, or as temperature decreases.

Ex Input:
Question: An object with a rough surface will have _____ friction than an object with a smooth surface.
Answer: more

Ex Output:
Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.