"Clean the house."
Translation:E hoʻomaʻemaʻe ʻoe i ka hale.
'A'ole/No. The word i in this sentence has no connotation or implication. It just is an object marker, meaning that ka hale is not the subject, it is what you are cleaning.
Kiloi ke keiki i ke kinipōpō i ka wahine. --> The child throws the ball to the woman.
The i before kinipōpō is needed because it is not the subject. The subject who is throwing is ke keiki and you see it has no word i before it.
Good question! Not in this case. For this context, the word i is not used as a preposition of location or movement (to, at, in, on, etc.) It has a totally different use. The word i is used as a particle to mark the direct object of the verb. It has no meaning in English, but it is required. See my explanation to KarinLynn1.