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This line is good if villain wont call a turn bet with a hand that you beat. If he will call a turn bet with a hand that you beat (and isn't inclined to bluff raise you), then bet the turn AND the river.

If villain will fold worse hands and push better hands (only) then this is a good line. However, by the time we get to the river, the K doesnt really change much, as it only puts us ahead of A9 or A2, and if hero is one of those guys who will only play with better hands after the turn, then these arent likely hands for him in the first place. You are still behind 99 and 22, and the K didnt really change that.

If you thought villain had a worse Ace, and would call, then bet the turn.