From arrival at Amsterdam's Schiphol Airport to the Central Station - how much time does this take?

I have an 11 hour layover and would like to spend the day in Amsterdam. Can someone with actual experience give me an estimate of the time it takes from getting off the plane, getting through customs/security, buying train tickets, waiting for a train, and actual arrival into the station.

FWIW, I will be there in late June and my flight arrives at 9am.

Thanks!

The train trip from the airport to Amsterdam Centraal itself takes around fifteen minutes -- the train tickets can be purchased from automated machines at the airport, which only takes a few minutes.

I'd be surprised if the whole thing (from leaving the plane to being at Centraal) would take you more than 90 minutes.