Calculate magnitude and direction of the vector c while a=3 and b=5

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

The amount of potential energy possessed by an elevated object is equal to what?