What happened when Harry Potter and Ron Weasley crashed into the Whomping Willow?

Answer 1

he got punished

Answer 2

Ron ran away from the car thinking it was a creature, then he realised that it was his car, because the car had been in the forest for ages and it had turned wild.

Later, the car rescued them from Aragog.

Answer 3

The Whomping Willow started hitting the car causing extensive damage to the car and some damage to the tree. Once they had freed themselves from the tree, the car ejected them and drove into the Forbidden Forest where it became wild.

On their way to the castle, they were found by Severus Snape who took them to the dungeons and showed them a Daily Prophet story where muggles had seen them flying. Snape wanted to expel them, but since he is not the head of Gryffindor, he didn't have that power. Professor Dumbledore and Professor McGonagall decide not to expel them, but they are given detention and a letter home. They were told not to break any more rules or they would be expelled.

Answer 4

Harry and Ron land in The Whomping Willow at Hogwarts School of Witchcraft and Wizardry after flying in Ron's dad's car.

Answer 5

Their borrowed Ford ran out of gas, and Ron's wand broke when they crashed.

Answer 6

If you mean when they went to the Forbidden Forest in book 2 and almost got eaten by the giant Spiders: Hagrid had hinted that they would find answers in the forest. Which they indeed did.