Answer:
See the answers below.
Step-by-step explanation:
In order to solve this problem we must remember that work in physics is defined as the product of force by distance.
For the pushing force
![W_(1)=F*d\\W_(1)=115*15\\W_(1)=1725[J]](https://img.qammunity.org/2022/formulas/physics/high-school/2ie492pq4cs662ikhuj8lqs5kek53a0b20.png)
For the lifting force
We must determine the weight, in this way multiplying the mass by the gravitational acceleration we determine the weight.
![W_(2)=m*g*d\\W_(2)=20*9.81*10\\W_(2)=1962[J]](https://img.qammunity.org/2022/formulas/physics/high-school/mfftvnzyszuq5a3rl0l5h0oqlm1qp79wlc.png)
We can see that more work has to be done to lift the mass of 20 [kg] than to push the load.