The two things that a machine can change are the force and the ____ .

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for two things that a machine can change. One of them is already given as 'force'. We need to identify the second aspect.

2. **Identifying the Aspects**: Machines are designed to assist in performing work. They can alter the way work is done by changing certain parameters.

3. **First Aspect - Force**: The first thing a machine can change is the magnitude of the force. This means that machines can either increase or decrease the amount of force needed to perform a task.

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