Question

Identify the correct S.I. units for the given quantities.

• A. Speed:- second
  Time:- metre/second
• B. Speed:- kilometre/hour
  Time:- second
• C. Speed:- kilometre/hour
  Time:- minute
• D. Speed:- metre/second
  Time:- second

Answer 1

The correct option is D Speed:- metre/second

Time:- second
Speed is the ratio of the distance an object covers to the amount of time taken by that object to cover that distance.
Speed = Distance/Time
The S.I. unit of distance is metre (m) while time is measured in second (s). So, S.I. unit of speed will be metre (m)/second (s).
Other larger units of time are hours and minutes while for distance it is kilometre.