Question

suppose we represent tge distance above the ground by a positive integer and that below the ground by negative integer than an elevator descends into a mine craft at the rate 5m per minute.what will be its position after 1 hour?

Answer 1

Assuming the elevator's initial position is 0(ground), Apply$x=x_0+vt\\=0+(-5 \frac{m}{\text{min}})(1 \text{hour})\\=-5 \frac{m}{\text{min}} \cdot 60 \text{min}\\=-300 m$