A volcano has erupted near a populated city in Hawaii. The lava is flowing at a constant speed of .25 m/s. The nearest village is approximately 2 kilometers away. How many minutes do the villagers have to evacuate before the lava reaches their home? ( Please show the steps to do the problem)
2007-03-22 14:33:35 · 7 answers · asked by Anonymous in Environment
2 kilometers = 2000 meters
time = distance / velocity or 2000 meters / 0.25 m/s
time = 8000 seconds
60 seconds / minute
time = 8000 seconds / 60 seconds/minute
time = 133.33 minutes ( or 2 hours 13.33 minutes)
2007-03-23 00:10:57 · answer #1 · answered by Christmas Light Guy 7 · 0⤊ 0⤋
since speed is given in terms of m/s
2 kilometers = 2000 meters
time = distance / velocity
time = 2000 meters / 0.25 m/s
time = 8000 seconds
since 60 seconds =1 minute
time = 8000 seconds / 60 seconds/minute
time = 133.33 minutes ( or 2 hours 13.33 minutes)
2007-03-29 22:59:21 · answer #2 · answered by irfan 3 · 0⤊ 0⤋
This is a math question NOT an environmental question try a different location eh.
But to help you out lava will never flow at a constant speed as their are too many variables. The land that it is flowing over is not constant so your question is not gonna work.
2007-03-22 14:52:02 · answer #3 · answered by Dan 5 · 0⤊ 0⤋
lava moving at .25meters per second
2000 meters = 2 kilometers/.25meters=8000seconds
8000 seconds / 60 seconds of a minute =133 minutes
133 minutes /60 minutes in the hour = 2.21 hours (decimal)
2 hours 13 minutes
2007-03-26 14:24:34 · answer #4 · answered by razorraul 6 · 0⤊ 0⤋
.25m/s = 1 meter in 4 seconds
2 kilometers = 2000 meters
4 seconds per meter X 2000 meters = 8000 seconds
8000 seconds / 60 seconds per minute = 133.33333 minutes
2007-03-29 03:36:35 · answer #5 · answered by Stop the Stupidity 4 · 0⤊ 0⤋
I think you need to do your own homework, but I will give you a hint.
Distance = velocity X time. You know the velocity (its in meters/second) and the distance (its in kilometers). So do the math. You do know how many meters are in a kilometer and how many seconds in a minute don't you?
Sorry to be so tough, but how else will you learn.
2007-03-22 14:41:21 · answer #6 · answered by Anonymous · 0⤊ 0⤋
it's a trick question. in hawaii, they do not measure time in minutes and they do not live in homes. they measure time in coconuts and live in huts. a reasonable answer would be that they three coconuts to flee their house.
2007-03-28 12:12:13 · answer #7 · answered by Anonymous · 0⤊ 0⤋