ANSWER:
g. 1.77 km per sec
STEP-BY-STEP EXPLANATION:
To calculate the velocity we must apply the Pythagorean theorem to first calculate the distance between the starting point and the end point, since a right triangle is formed
[tex]\begin{gathered} h^2=85^2+195^2 \\ h^2=7225+38025 \\ h=\sqrt[]{45250} \\ h=212.72 \end{gathered}[/tex]Velocity is distance over time, therefore
[tex]\begin{gathered} v=\frac{212.72}{2}= \\ v=106.36 \end{gathered}[/tex]The speed is 106.36 km per minute, if we calculate the speed per kilometers per second it would be:
[tex]106.36\cdot\frac{\operatorname{km}}{\min}\cdot\frac{1\min}{60\sec}=1.77\cdot\frac{\operatorname{km}}{\sec }[/tex]Which means that the speed is 1.77 kilometers per second, that is, the answer is g. 1.77 km per sec
