A ball is thrown vertically upwards with a velocity v and an initial kinetic energy

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

9. A ball is thrown vertically upwards with a velocity v and an initial kinetic energy Ek\mathrm{E}_{\mathrm{k}}. When half way to the top of its flight, it has a velocity and kinetic energy respectively of (A) v2,Ek2\frac{v}{2}, \frac{E_{k}}{2} (B) v2,Ek2\frac{v}{\sqrt{2}}, \frac{E_{k}}{2} (C) v4,Ek2\frac{v}{4}, \frac{E_{k}}{2} (D) v2,Ek2\frac{v}{2}, \frac{E_{k}}{\sqrt{2}}

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