Newton's Laws of Motion - Physics 101 / AP Physics 1 Review - Dianna Cowern

Nice video. 
But I think it is important to discuss the following when we teach Newton's laws. 
1) Place a coin on the top of a closed fist. When we suddenly move the hand downward, the coin separates from the hand. Is it due to inertia of coin? If yes, then why does not inertia of the coin separate the coin from hand when we slowly move the hand downward? 
2) Place a coin on the top of a book. If you pull the book hard, the coin " seems " to move in backward direction. Is it due to inertia of coin? Coin was at rest. In an attempt to remain at rest, it slips on the book. If it is true, then why doesn't inertia work when we pull the book gently? 
3) A popular demonstration is card coin experiment (or different versions of it). Place the coin on the card placed on a glass. If you flick the card hard, the coin falls into glass. The explanation given is that the coin has inertia. It was at rest. Even if card moves, the coin remains at rest due to inertia of rest and falls into glass when it finds no card beneath. If this is true, then why doesn't inertia make the coin fall into glass when you SLOWLY flick? Does law of inertia valid when card is flicked hard and not valid when flicked slowly?