SOLUTION: Two rockets are launched. The first travels at 9000 mph. Fifteen minutes later the second is launched at 10,000 mph. Find the distance at which both rockets are an equal distance f

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Question 326388: Two rockets are launched. The first travels at 9000 mph. Fifteen minutes later the second is launched at 10,000 mph. Find the distance at which both rockets are an equal distance from Earth.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming that this is an algebra problem and not a physics problem.
In other words, the effects of gravity on the rocket's trajectories will not be taken into consideration.
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Rate*Time=Distance
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After 15 minutes (1%2F4 hour), the first rocket is 2250 miles from Earth.
D1=9000t%2B2250
D2=10000t
Find t when D1=D2.
9000t%2B2250=10000t
1000t=2250
t=2250%2F1000=2.25 hrs
They meet at 2.25 hrs after the second rocket is launched.
Use either equation to find the distance.
D2=10000%282.25%29=22500miles