Which of the following is an example of velocity? O a. 2 m/s
O b. 25 N
O c. 55 miles per hour South
O d. 2m/s2 west

C

Explanation:

b is 55 miles per hour south  or 55mph[South]

the important part to understand is that velocity is a vector meaning it also has to have a direction, in this case south. That is why a (2m/s) is not a velocity, however 2m/s is a speed.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

the answer would be a