Help interpreting a momentum graph

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The discussion focuses on interpreting a momentum graph to determine the object's momentum at 3 seconds, which is indicated as 35 N. A participant calculated the momentum as 105 kg·m/s but received a mark of incorrect. They suggest that posting the graph would aid in understanding the problem better. Another participant points out that the area under the graph represents the change in momentum, and encourages calculating this area from t=1 to t=3, noting it forms a rectangle and triangle. The conversation emphasizes the importance of accurately calculating the area under the graph to determine momentum changes.
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Homework Statement



What is the objects momentum at 3 seconds, on the graph at 3 seconds it is exerting 35n

Homework Equations



f=change in momentum/time

The Attempt at a Solution


I got 105kgms but it was marked wrong...
I can make the graph in paint if it will help anybody.
 
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It would be beneficial to post the graph as well.
 
ok:
a.jpg
 
then simply the area under the graph gives the change in momentum, so from t=1 to t=3 find the area. It forms a rectangle and triangle.
 

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