Why are the vector quantities magnitude and direction

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

What is the momentum of a 2 kg object moving at 15 meters per second

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e