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.

Q: Question: Allen is riding his bike on a path. The course ends up 1000 feet lower above sea level compared to the beginning. At which point is the air resistance lower? 
 Answer: at the beginning

A: At higher elevations, there is less air to press on a given area.
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Q: Question: Mike is trying to make two different things slide across the ground. One is block, the other is a chair. The thing that will be hardest to push has 
 Answer: more mass

A: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.
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Q: Question: John was looking at a refractive index and observing the light. The more speed the light had, it would bend 
 Answer: More

A:
In refraction of light, the greater the change in speed, the more light bends.
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