Physics question!! What is the velocity at ejection of debri from a volcano?

Posted on 2015-08-24 06:04:00 in Physics by JOSE

1. An explosion from the summit dome occurred yesterday morning, producing a plume that rose approx. 2 km. Sinabung volcano (Sumatra, Indonesia) activity update.

2. The highest Mt. St. Helens plume on May 18, 1980 reached about 31 km (101,700 feet),
Given that the highest plume from Mt St Helens reached 31 km, what is the velocity of the debri at the point of ejection?

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