alleryStart learning →One newton of force is defined as the force needed to do which of the following?
AGive a 1 kg mass an acceleration of 1 m/s^2
BHold a 1 kg mass still against gravity
CGive a 1 g mass an acceleration of 1 m/s^2
DMove a 1 kg mass through a distance of 1 m
Answer & Solution
Correct answer: A. Give a 1 kg mass an acceleration of 1 m/s^2
1. The SI unit of force is the newton, abbreviated N.
2. It is the force needed to accelerate a 1 kg system at the rate of 1 m/s^2.
3. In base units that means 1 N equals 1 kg times m/s^2.
4. Holding a mass still against gravity needs a force equal to its weight, which is a different quantity.
_Source: OpenStax College Physics (CC BY 4.0), Ch 4 "Dynamics: Force and Newton's Laws of Motion", section 4.3 Newton's Second Law of Motion: Concept of a System_
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