The object it a rectangle, its dimensions are :

length: 1m

width: 1m

height: 10m

weight: 100kg

The object initially makes an angle of 89 degrees with the perfectly flat ground on its left side.

At what velocity will the top of the object's left side strike the ground, neglecting air resistance ?

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I'm sorry if there are any errors in my question, this isn't from a textbook or anything I was just wondering how one would go about solving it. I'd certainly be more than happy to revise the question.