1牛頓既力有幾大

The newton is the unit of force derived in the SI system; it is equal to the amount of forc

e required to give a mass of one kilogram an acceleration of one meter per second squar

ed.

Algebraically:

1N= 1 (kg x m)/ s^2

1 N is the force of Earth's gravity on an object with a mass of about 102 g (1⁄9.8 kg) (su

ch as a small apple).

On Earth's surface, a mass of 1 kg exerts a force of approximately 9.80665 N [down] (o

r 1 kgf). The approximation of 1 kg corresponding to 10 N is sometimes used as a rule o

f thumb in everyday life and in engineering.

The decanewton (daN) = 10 N is increasingly used when specifying load bearing capacit

y of items such as ropes and anti-vibration mounts because it is approximately equivalen

t to the more familiar non-SI unit of force, the kgf.

The force of Earth's gravity on a human being with a mass of 70 kg is approximately 68

7 N.

The dot product of force and distance is mechanical work. Thus, in SI units, a force of 1

N exerted over a distance of 1 m is 1 N·m of work. The Work-Energy Theorem states tha

t the work done on a body is equal to the change in energy of the body. 1 N·m = 1 J (joul

e), the SI unit of energy.

It is common to see forces expressed in kilonewtons or kN, where 1 kN = 1 000 N.

1N=1KG/M/S?
者係1KG既物件1秒內推前行到1M

1 N equals 1 kg-m/s2 (NOT 1 kg/m/s). It is the force required to accelerate a mass of 1 kg with an acceleration of 1 m/s2.
Under the action of a 1 N force, the object acquires a speed increase of 1 m/s for every second of time interval. That is, it would move a distance of 0.5 m from rest in the first second.