The end of life on Earth will involve something like this.
The end of Earth will take longer.
:’) Depends of course on how big the bolide will be; anything a mile in diameter or more exceeds the energy of all the world’s nuclear weapons combined. The Chicxulub object was approximately 10 miles across, which means, tenfold larger in each dimension, or 1000 times as massive, iow, all the nukes times one thousand. Much of the surface-dwelling animal life would succumb in a few hours, just from the rise in temperature of the entire atmosphere.
But hey, stuff like that is why they call me Mister Sunshine.