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: If Mona is building a machine to help her vacuum her floor and she decreases the amount of force the engine inside the vacuum, what happens to the vacuum ability to make work easier? 
 Answer: decreases

Ex Output:
Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.


Ex Input:
Question: Someone that never works out will likely have _____ muscles than someone who lifts weights at home all day. 
 Answer: smaller

Ex Output:
Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.


Ex Input:
Question: If Mona is pushing some toy cars around and she knows that the mass of the truck is less then the mass of the car, which one will accelerate faster when she pushes it? 
 Answer: truck

Ex Output:

The greater the mass of an object, the less it will accelerate when a given force is applied.