You use me-kan when there is an object having the action done to it. Jangan melempar -dont throw. Jangan melenparkan tas - don't throw bags.
I'm trying to make sense of this lesson and what the -kan suffix adds. What is the difference between melempar and melemparkan?
Melemparkan seems a little more aggressive?
Me-kan as I understand means to cause something to someone or something else