Which units in the metric system are used to measure distance?

meters, centimeters, etc.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

higher potential

explanation:

because it is in a high speed so it must move into a of high potential