Final answer:
The amount of John's second payment depends on several factors such as the interest rate, the frequency of payments, and the amount paid in the first installment. Without this information, it is not possible to determine whether the second payment will be more than, less than, or exactly $1000.
Step-by-step explanation:
When John borrows $1000 from Jane at an effective interest rate i, the amount he will have to pay for the second payment would depend on the terms of repayment. If an interest rate is applied, and we're considering the second payment within the context of typical loan terms where a payment includes both principal and interest, then it is likely that the second payment would be made up of both interest on the remaining balance and a portion of the principal balance. Therefore, the second payment could theoretically be more than $1000 if it includes interest, exactly $1000 if it only covers the principal, or less than $1000 if John paid down a portion of the principal in his first payment.
However, without specific information about the frequency of payments, the interest rate, and how much John paid in the first installment (if he made a payment already), it is impossible to give a definitive answer to what the second payment amount will be. It can vary widely based on these factors, and the question does not provide enough detail to determine the exact amount of the second payment.