Question

In Newton's second Law $\overrightarrow{F}=m\overrightarrow{a}$ (for constant mass $m),\overrightarrow{a}$ is the acceleration of the mass $m$ with respect to

• A. Any observer
• B. Any inertial observer
• C. An observer at rest only
• D. An observer moving with uniform speed only

Answer 1

Answer: (B)

Any inertial observer

In Newton's second law,

$\overrightarrow{F}=m\overrightarrow{a}$

where, $m=$ mass of the body

$\overrightarrow{a}=$ acceleration with respect to the any inertial observer

The Newton's second law is valid only for the inertial frame of reference.

The correct option is B.