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# Physics I Exam 1 ## Equations ### 1D Motion * $\bar{v}=\frac{\Delta x}{\Delta t}$ * $\bar{a}=\frac{\Delta v}{\Delta t}$ * $v=v_{0}+a t$ * $x=x_{0}+v_{0} t+\frac{1}{2} a t^{2}$ * $v^{2}=v_{0}^{2}+2 a \Delta x$ ### 2D Motion * $v_{x}=v_{0} \cos \theta$ * $v_{y}=v_{0} \sin \theta$...

# Physics I Exam 1 ## Equations ### 1D Motion * $\bar{v}=\frac{\Delta x}{\Delta t}$ * $\bar{a}=\frac{\Delta v}{\Delta t}$ * $v=v_{0}+a t$ * $x=x_{0}+v_{0} t+\frac{1}{2} a t^{2}$ * $v^{2}=v_{0}^{2}+2 a \Delta x$ ### 2D Motion * $v_{x}=v_{0} \cos \theta$ * $v_{y}=v_{0} \sin \theta$ * $x=x_{0}+v_{0 x} t$ * $y=y_{0}+v_{0 y} t-\frac{1}{2} g t^{2}$ * $v_{y}=v_{0 y}-g t$ * $v_{y}^{2}=v_{0 y}^{2}-2 g \Delta y$ ### Vectors * $A_{x}=A \cos \theta$ * $A_{y}=A \sin \theta$ * $A=\sqrt{A_{x}^{2}+A_{y}^{2}}$ * $\theta=\tan ^{-1}\left(\frac{A_{y}}{A_{x}}\right)$ ### Constants * $g=9.8 \mathrm{~m} / \mathrm{s}^{2}$ ## Instructions * Write your name and student ID number on the cover sheet. * There are three problems. Attempt all of them. * Show all your work in the space provided. If you need more space, use the back of the page. * Indicate your answer clearly by drawing a box around it. * Correct units are required for full credit. * Answers must have the correct number of significant figures. * You are allowed a non-programmable calculator and one formula sheet.