I need help solving 3.3.6 in Java. I will upload the question and then the program.

Give an implementation of minusO for Vector solely in terms of the other , methods, such as directionO and magnitudeO. public Vector minus (Vector that) f return rn this.plus(that.scale(-1.0)) dvantage of such implementations is that they limit the amount of detailed i, to check: the disadvantage is that they can be inefficient. In this case. plusO eplacing the minus sign with a plus sign is probably a better implementation. 33.6 Create a data type for a three-dimensional particle with position ( -r), od tines O both create new Vector objects, so copying the code for plus O and 135 implement a mainO method for Vector that unit-tests its methods. mass (m), and velocity (v, v,1%). Include a method to return its kinetic energy, which equals 1/2m (vx2 + + v,2). Use Vector (PROGRAM 3.3.3). 33.7 If you know your physics, develop an alternate implementation for your data type from the previous exercise based on using the momentum (p. P,P.) as an instance variable