Define the terms pelo and principle axist and focus or principal focus of a spherical mirror

Pole - The central point of the reflecting spherical surface is called pole (P). It lies on the surface of the mirror. ... (d) Principal focus - Incident rays parallel to the principal axis, after reflection either converge to or appear to diverge from a fixed point on the principal focus of the spherical mirror.

Explanation:

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

prolly a beacuse the momentuem the car has increases while going down hill