HELP Collision question with two unknowns

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The discussion focuses on calculating the maximum force exerted by the floor on a 170g ball that is dropped from a height of 2.3m and rebounds to a height of 1.8m. The impulse received from the floor is represented in a force vs. time graph, where the maximum force (Fmax) can be determined from the area under the impulse triangle, which has a width of 5ms. The participant successfully identifies the mass of the ball as 0.17kg and concludes the problem after initially struggling with the calculations.

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A 170g ball is dropped from a height of 2.3m, bounces on a hard floor, and rebounds to a height of 1.8m. The figure shows the impulse received from the floor. What maximum force does the floor exert on the ball?

http://http://session.masteringphysics.com/problemAsset/1013629/6/jfk.Figure.P09.39.jpg

In the force vs. time graph if you can't see it, the change in maximum force is a triangle that reaches up to Fmax with an impulse width of 5ms.

170g=.17kg is one of the only things I know how to do with this one.

I know that the area under the impulse on a force vs. time graph is the impulse, but I don't know how to figure what the answer could possibly be.
 
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nevermind! I got it!
 

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