A pyrotechnician plans for two fireworks to explode together at the same height in the air. Firework A travels at a speed of 220 feet per second and Firework B travels at a speed of 200 feet per second. Firework B launched 0.25 seconds before Firework A. How many seconds after Firework B launches will they both explode?
Please wirte an equation, thats what i need help with!

Question

A pyrotechnician plans for two fireworks to explode together at the same height in the air. Firework A travels at a speed of 220 feet per second and Firework B travels at a speed of 200 feet per second. Firework B launched 0.25 seconds before Firework A. How many seconds after Firework B launches will they both explode? 
Please wirte an equation, thats what i need help with!

anonymous · Answer

Umm.... thats not the same equation

anonymous · Answer

I need a written equation for how to solve this problem

mathmale · Answer

You're supposed to write "equations of motion" for the vertical motion.  Note that you're given the initial velocities in each of two cases; your equations must involve those, as well as the acceleration due to gravity.   

For what course are you doing this problem?

It'd be an elementary problem in Physics; in Algebra your textbook should have explained how to write an equation of motion for vertical motion, taking into account time, acceleration due to gravity and initial velocity.

anonymous · Answer

It did not tell me in my book, and I am a 7th grader but I a taking 9th grade algebra