When you park on a hill, the direction your are pointed determines
which direction your car will roll if the brakes fail.

when you park on a hill, the direction you FRONT WHEELS are pointed determines which direction your will roll if the brakes fail.

Explanation:

The law requires you to point your front wheels in the direction that minimizes the risk of a collision. When you park on a hill, and there is a curb on your side of the street, turn your front wheels so that they will roll into the curb. When facing uphill, point your wheels away from the curb. This way, they'll roll backward into it if the brakes fail. When facing downhill, point your wheels toward the curb. This way, they'll roll forward into it if the brakes fail. hope this helps<3

c)as speed changes, wavelength and frequency change.

everything changes!

c. newton's third law of motion