For 10 points, name this concept that is equal to mass times acceleration.
An electric field at a point is equal to this divided by charge. An inverse square law is used to describe one type of this in a law named for Coulomb and in another discovered by Newton. Work is equal to this over a distance. Torque is equal to the crossproduct of the displacement vector and this. All of these associated with an object are shown in a free body diagram. For 10 points, name this concept that is equal to mass times acceleration.
An electric field at a point is equal to this divided by charge.
{force}