Question

explain why when some fireworks are let off at a distance, we see the fireworks first before hearing the sound of explosion

Answer 1

we actually first see some fire works then hear the sound because light travels faster than this sound so that's the answer

hope it helps....

Answer 2

We see the firework works first because the because burning emits light . It is a fact that it travels faster than sound . So the sound energy produced during the burning of fire work reaches us late . So we hear the found after vizualizing it

Speed of light= 300 million meters per second( approx)
Speed of sound = 340 meters per second( approx)