Answer:
Newton is the unit of force, abbreviated as "N"
Step-by-step explanation:
Let us understand the given units:
a) m/s: it is meter per second. It is SI unit of speed or velocity.
b) m/s: it is meter per second square. It is SI unit of acceleration (velocity per second).
c) N : it is unit of force. It stands for Newton.It is equal to 1 kilogram meter per second squared.
d) N/s: it is newton per second. It is unit of momentum.