instruction:
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.
question:
Question: Dan hits a car with his car. Dan was going forty miles an hour, and the other car was stopped. If Dan had hit the car going only twenty miles an hour, the stopped car would be moved 
 Answer: less
answer:
The harder the batter hits the ball, the greater will be its acceleration.


question:
Question: Greta yells across the canyon in the cool morning and again in the hot afternoon. The sound likely traveled _____ in the morning. 
 Answer: faster
answer:
For a given medium, sound has a slower speed at lower temperatures.


question:
Question: As we turn down the volume on a stereo that we are listening to the sound waves get 
 Answer: smaller
answer:

As decibel levels get higher, sound waves have greater intensity and sounds are louder.