Question

A sled slides down an icy slope starting at 6.14m/s. At the bottom of the slope, its speed is 12.5m/s. What is its minimum height (in m) of the slope? Why does this question ask for the minimal height of the slope?

Answer 1

$$2gh=v^2-u^2$$

$$2(9.8)h=12.5^2-6.14^2$$

$$h=6.05 m$$