Entering Turkey with the pill in hand luggage (with or without a certificate)?

Hello, I'll be flying to Turkey soon, with only hand luggage. I've read that you need a doctor's note for prescription medications. But that even standard medications aren't usually requested. What's your experience? Have you ever had to present the note for the pill at the airport, or has that never happened with hand luggage?…

DHL return slip?

I ordered something from Aliexpress. However, the package was sent back to the sender because the delivery failed. Since the shop doesn't believe me that the package was returned, I need a certificate from DHL. The certificate should look something like this. But where can I get something like that? please reply

In physics I have to calculate the distance that was traveled?

My teacher said that you can find the solution using the formula and calculating the area. For the first interval, the formula yielded 315m. Calculating the area yielded 460. For the 2nd interval the results are the same. For the 3rd interval I got 400m using the formula and 700m by calculating the area.