## Conceptual Physics (12th Edition)

Find the horizontal component of the initial velocity. The initial angle is 45 degrees and the initial speed was 141 m/s. The vertical and horizontal velocity components are equal. $$v^{2}+v^{2} =(141 \frac{m}{s})^{2}$$ $$v=100 \frac{m}{s}$$ At the top of its flight, the vertical component of velocity is zero. The horizontal component does not change, and is still 100 m/s. This is discussed on page 187.
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