Answer:
Object Z
Step-by-step explanation:
We add to the table a fourth column to register the linear momentum (P = m*v) for each object so we can easily answer the question (recall that linear momentum is defined as the mass of the object times its velocity):
![\left[\begin{array}{cccc}Object&Mass&Vel&P\\W&58&1&58\\X&34&2&68\\Y&89&0.5&44.5\\Z&60&2&120\end{array}\right]](https://img.qammunity.org/2020/formulas/physics/college/deyuo3vkvtya4eczrbyx0srn93fd5knr2i.png)
Therefore, the object with largest momentum is object Z, and it would therefore require the greatest change in momentum to stop it.