Question

The S.I unit of speed is

• A. $cm{s}^{-1}$
• B. $m{s}^{-1}$
• C. $km{h}^{-1}$
• D. $newton$

Answer 1

The correct option is B

$m{s}^{-1}$

Explanation for correct option:B)

The S.I unit of speed is $m{s}^{-1}$

Explanation for the incorrect options:

A) The cgs unit of speed is $cm{s}^{-1}$

C) $km{h}^{-1}$ is not the S.I system of speed.

D) $newton$ is the S.I unit of force.

Hence option (B) is the correct option.