All of the following are examples of velocity except
O
A. a bicyclist traveling 25 km/hr northwest
O
B. a northbound train moving at 60 km/h
O
C. a dog trotting at 2km/hr eastward toward
his master's home
O
D. a unicyclist riding 1km/hr on a tightrope
the circus

no

sodium is solid at rt

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