How can I Pre-populate Fields based on a selection from a drop down menu

I have multiple names in a drop down and based on the selection I want it to pre populate address and email address.  Can this be done?

Yes, that's possible through Update/Calculate Field Condition.

Here's a guide: https://www.jotform.com/help/268-How-to-Insert-Text-or-Calculation-into-a-Field-Using-Conditional-Logic

If you need further assistance, let us know.