You are a fireworks-launcher,and launch a fireworks shell into the air directly above you with an initial speed of 227 m/s.If it explodes at the top of its trajectory,how long after launch do you hear the explosion? Assume 343 m/s for the speed of sound.
A)23.1 s
B)30.8 s
C)38.6 s
D)46.1 s
E)None are correct.

Question

Quizplus · Accepted Answer

The Answer of You are a fireworks-launcher,and launch a fireworks shell into the air directly above you with an initial speed of 227 m/s.If it explodes at the top of its trajectory,how long after launch do you hear the explosion? Assume 343 m/s for the speed of sound.
A)23.1 s
B)30.8 s
C)38.6 s
D)46.1 s
E)None are correct.

You Are a Fireworks-Launcher,and Launch a Fireworks Shell into the Air