See the attachment please.
The Attempt at a Solution
I know the v1 x delta (t) is for the rectangle,
I dont see how the second part works? I dont understand why the t^2 and how a replaces the area formula i have written.
Thanks for your help, its my first day of class today, and its been a while since i was last in a physics / math class.
EDIT: I added a formula sheet we were given, sorry i just dont see the relationship right now..
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