Cooper admitted Pools were outclassed although he is confident his side will be better for it come the start of the season.
"From the word go, Newcastle were something special," he told the club's official website. "I've not gone in there after that and gone mad because we've worked really hard in the build-up to the Crewe game on Saturday but that was a lesson in football.
"We'll learn from it though - we got beat heavily by Newcastle last time I was here and we learnt from it and went on to have a really good season that year.
"Top players from the Premier League punish you when you make mistakes and we got punished. You switch off for a minute and they kill you - that's a fact.
"It's another game for us, though. It was planned quite late but they are grateful we gave them the game and hopefully it has worked for us financially too because there was a good crowd."