In a sharp way means doing something quickly and suddenly, or in a way that is not smooth.
When something happens sharply, it can make people feel surprised or a little bit scared.
Examples:
She turned sharply and ran away.
He stopped sharply when he saw the snake.
The car turned sharply and almost hit the tree.
I jumped sharply when I heard the loud noise.
The price of the toy went up sharply, so I couldn't buy it.
The dog barked sharply at the mailman.