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The speed of a tsunami depends on where it is. In the deep ocean it is around 500 mph. As it approaches land it is 25 to 30 mph.
Your question is incomplete so I will give you a general overview of the average speeds of a tsunami.
When a tsunami forms in the deepest parts of the ocean, its average speed is around 700 miles per hour. As it moves to a shallower area but still in the deep ocean, the speed goes to 500 miles per hour.
When a tsunami gets to the coast where it wrecks havoc on human settlements, its speed is around 25 to 30 miles per hours.
Find out more on the speed of a tsunami at https://brainly.com/question/7667826
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