Which of the following in not an acceleration unit? list all that apply-km/hr/s-km/hr/hr-m/s2 (it's supposed to be squared)-km/s-m/s/s

Unit of acceleration is not Km/s. Therefore, option D is the correct answer.

Thus, we can conclude that Km/s is not the unit of acceleration. Therefore, option D is the correct answer.

Learn more about acceleration here:

 link                  

An acceleration unit needs a unit of length or distance on top and a unit of (time · time) on the bottom.  Let's go through the list:

- km/hr/s = (km) / (hr · sec) . . . Yes

- km/hr/hr  = (km) / (hr · hr) . . . Yes

- m/s² = (m) / (sec · sec) . . . Yes

- km/s  = (km) / (sec) . . . No . . . This is the only one that's NOT acceleration.  This one is actually a unit of speed .

- m/s/s = (m) / (s · s) . . . Yes

a and b sometimes have a positive value

double the distance = divide strength by 4