## Conceptual Physics (12th Edition)

a. The vertical velocity component is the initial speed multiplied by the sine of the initial launch angle. These 4 vertical components, in the order ABCD, are $6 \frac{m}{s}, 16 \frac{m}{s}, 7 \frac{m}{s},$ and 5 $\frac{m}{s}$. b. The horizontal velocity component is the initial speed multiplied by the cosine of the initial launch angle. These 4 horizontal components, in the order ABCD, are $8 \frac{m}{s}, 12 \frac{m}{s}, 7 \frac{m}{s},$ and $8.7 \frac{m}{s}$. c. The acceleration is g, directed downward, for all of them.