Last Monday, Henderson made the heartbreaking decision to turn off his son's life support.
"I was with him the whole time in hospital but he was in a coma," Henderson said. "He was with family when he died."
Jacob's uncle Mike Pidduck said he was a fantastic boy who always had a smile on his face.
"He was your average Kiwi kid who loved rugby and being outdoors," he said.
Jacob's classmates at Leamington School recorded two songs to be played at his funeral. Principal Mike Malcolm said Jacob's classmates had also made wreaths and written poems for Jacob.
Starship Hospital staff made prints of Jacob's hands before they turned off life support.
"The way they managed his death on Monday was nice - it was a nice way of saying good-bye," said Mike Pidduck.
"The staff were in tears and they made some handprints for the family before letting Jake go."
Waikato district road policing manager, Inspector Leo Tooman, said the cause of the crash was being investigated.