Question

Which of the following could not be a unit of speed?
a)km/h
b)s/m
c)m/s
d)mms

Answer 1

b) s/m .

it can't be the answer

Answer 2

B) s/m is not a unit of speed

Speed:

The rate at which an object moves is referred to as speed. This phrase refers to the distance travelled by an object in relation to time.

The SI unit of speed is given in terms of basic units of distance and time

Formula for speed

Speed (S) = distance(d)/time(t)

• Speed measurements contain a unit of distance divided by a unit of time.
• Examples of units of speed might include “kilometers per hour” (km/h),  “meters per second” (m/s), “millimeter per second” (mm/s) or “miles per hour” (mph or mi/hr).