)a skier starts down a frictionless 32° slope. after a vertical drop of 25 m, the slope temporarily levels out and then slopes down at 20°, dropping an additional 38 m vertically before leveling out again. find the skier’s speed on the two level stretches

The skier’s speed on the two level stretches are 22.13 m/s and 27.29 m/s.

Explanation:

Given that,

Slope down = 32°

Height = 25 m

Before leveling,

Slope down = 20°

Height = 38 m

We need to calculate the skier’s speed on the two level stretches

Using formula of energy

For first stretch,

Height = 25 m

Put the value into the formula

For second stretch,

Height = 38 m

Put the value into the formula

Hence, The skier’s speed on the two level stretches are 22.13 m/s and 27.29 m/s.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over