Question

One Newton is the force, which produces an acceleration of :

• A. $1m{s}^{-2}$ on a body of mass $1gm$
• B. $1cm{s}^{-2}$ on a body of mass $1kg$
• C. $1cm{s}^{-2}$ on a body of mass $1gm$
• D. $1m{s}^{-2}$ on a body of mass $1kg$

Answer 1

Answer: (D)

$1m{s}^{-2}$ on a body of mass $1kg$

Newton is unit of force in SI system: 1 Newton is the force needed to accelerate 1 kg of mass at the rate of 1 $m/s^2$.
We know that $Force=mass\times acceleration$
where S.I unit of mass is $kg$ and S.I. unit of acceleration is $m/s^2$
$\therefore 1N=1kg\times 1m/s^2$