A rock is thrown from the top of a 20-m building at an angle of 53º above the horizontal. If the horizontal rage of the throw is equal to the height of building, with what speed was the rock thrown?

Where should I start?

Question

A rock is thrown from the top of a 20-m building at an angle of 53º above the horizontal. If the horizontal rage of the throw is equal to the height of building, with what speed was the rock thrown? 

Where should I start?

ash2326 · Answer

height of building=20 meter
range is also the same ( given in the question)

ash2326 · Answer

@micahwood50 did you start with this?
I'm also trying but it's a tedious problem

anonymous · Answer

Draw the Pic First..)

anonymous · Answer

Well, we know that x = -y and x= Vocosθ t and y = Vosinθ t + 1/2 gt² so...

-Vocosθ t = Vosinθ t + 1/2 gt²

-Vocosθ = Vosinθ+ 1/2 gt

Now what?

anonymous · Answer

We don't know time, so...

anonymous · Answer

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