The next to function is just one useful function that you might create. What are some others?
- When you kick a ball, you are not right next to it. How close to a ball should you be so that when you kick it looks like you are kicking the ball?
- If you pick up something, how close do you need to be? What is the calculation?
- How close together should two people be to shake hands?
- To talk to each other?
Think about other calculations you might need.