HELP Collision question with two unknowns

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A 170g ball is dropped from 2.3m and rebounds to 1.8m after hitting the floor. The impulse received from the floor is represented as a triangular area on a force vs. time graph, with a width of 5ms. The area under the graph corresponds to the impulse, which can be calculated to find the maximum force exerted by the floor on the ball. The user initially struggled with the problem but ultimately figured out the solution. Understanding the relationship between impulse and force is crucial for solving such collision questions.
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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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