Final answer:
Jack will pay $100 in interest over 2 years.
Step-by-step explanation:
To calculate the interest, we can use the formula:
Interest = Principal * Rate * Time
In this case, the principal is $1,000, the rate is 5% (or 0.05 as a decimal), and the time is 2 years.
Substituting these values into the formula:
Interest = $1,000 * 0.05 * 2 = $100
Jack will pay $100 in interest over 2 years.