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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §12.2 Plane Motion: Projectiles and Cycloids, #9 · Multivariable Calculus · Curves in space

### *10 With … and … from equation (1), show that …v_0^2…

A ball starting from $(0, 0)$ passes through $(5, 2)$ after 2 seconds. Find $v_{0}$ and $α$ . (The units are meters.)

### *10
With $x$ and $y$ from equation (1), show that
$v_{0}^{2} \geq (g x / v_{0})^{2} + 2 g y .$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §12.2 Plane Motion: Projectiles and Cycloids, #9

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