That took about 2 queries and 2 minutes - the first result for the space shuttle's speed compared a bunch of sources, 3 of which were in agreement.
Q: [dynamite explosive energy]
A: 2.1 million joules
Q: [2.1 * 5]
A: 10.5 million joules
Wikipedia was the first result for that, with the answer right on the page (and the text leading up to the answer in the snippet).
Curiously, a lot of people do use full-sentence queries - perhaps it's the lingering aftereffects of their 3rd grade teachers. If Wolfram Alpha can handle those correctly, it'll be a big win. But other search engines have tried - Ask.com is based around being able to ask questions in natural language. And it never seems to work that way - computers don't seem to know which of the many things you say are irrelevant.
Curiously, a lot of people do use full-sentence queries - perhaps it's the lingering aftereffects of their 3rd grade teachers. If Wolfram Alpha can handle those correctly, it'll be a big win. But other search engines have tried - Ask.com is based around being able to ask questions in natural language. And it never seems to work that way - computers don't seem to know which of the many things you say are irrelevant.