# Question 8cfd6

Jul 5, 2017

$14$ $\text{m}$

#### Explanation:

We can treat the hill's incline as perfectly straight so that the ball rolls in one dimension.

If it traveled $14$ $\text{m}$ uphill, and then $28$ $\text{m}$ downhill, the displacement from the starting point is

$14$ $\text{m}$ $- 28$ $\text{m}$ = color(red)(-14 color(red)("m"

The magnitude of this displacement is color(blue)(14 color(blue)("m"#, because a magnitude is always a positive quantity.