Computer modelling

What is model?
_ Model allows you to test out a situation as close as a real life. It help you to see what would happen to make changes. For example, we can test by car or racing car and when we crash we don't get hurt. They use model because it is close to a real life, and it is very cheap to use. For example, if you are planning a trip, you can use model to test if it is over or under your budget. there is a different between model and simulation. a model is to test that situation that close to a real life. a simulation is to see what happen when we speed up or slow down and to see if we crash, will the passenger have any injures. simulation also help us to test out a machine without learning how to use them.