query: What is the unit of measurement for force?
passage: Force
In physics, a force is any interaction that, when unopposed, will change the motion of an object.[1] A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol F.
passage: Force
where r {\displaystyle r} is the distance between the two objects' centers of mass and r ^ {\displaystyle \scriptstyle {\hat {r}}} is the unit vector pointed in the direction away from the center of the first object toward the center of the second object.[10]