Give 1 word term

1.changing momentum.
2.unimpeded motion of an object. falling under the influence of only gravity.
3.the phenomen that waves bend around the edges of an obstacle.
4.The force per unit charge at a point in an electric field.
5.the vector sum of the force acting on an object.

1. impulse

2. trajectory
3. diffraction
4. (electric) field or E-field
5. resultant