If a bicyclist travels 30 kilometers in two hours, her average speed is… A - 30km/h
B - 60km/h
C - 15km/h
D - 2km/h

I will mark 5.0 star and heart if you explain it and answer correctly

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.