# physics

posted by .

One of the new events in the 2002 Winter Olympics was the sport of skeleton (see photo). Starting at the top of a steep, icy track, a rider jumps onto a sled (known as a skeleton) and proceeds-belly down and head first-to slide down the track. The track has fifteen turns and drops 100 m in elevation from top to bottom.

(a) In the absence of nonconservative forces, such as friction and air resistance, what would be the speed of a rider at the bottom of the track? Assume that the speed of the rider at the beginning of the run is relatively small and can be ignored.
m/s

(b) In reality, the best riders reach the bottom with a speed of 35.8 m/s (about 80 mi/h). How much work is done on an 84.4-kg rider and skeleton by nonconservative forces?

• physics -

a. V^2 = Vo^2 + 2g*h.
V2 = 0 + 19.6*100 = 1960
V = 44.3 m/s.

## Similar Questions

1. ### Comparative Vertebrate Anatomy

Compare the dermatocranium,splanchnocranium,chondocranium,appendicular skeleton and axial skeleton of the ff: 1. fish 2. amphibian 3. reptile 4. bird 5. mammal
2. ### Zoology

Compare the dermatocranium,splanchnocranium,chondocranium,appendicular skeleton and axial skeleton of the ff: 1. fish 2. amphibian 3. reptile 4. bird 5. mammal
3. ### Physics!

One of the new events in the 2002 Winter Olympics was the sport of skeleton (see the photo). Starting at the top of a steep, icy track, a rider jumps onto a sled (known as a skeleton) and proceeds - belly down and head first - to slide …
4. ### physics

Starting at the top of a steep, icy track, a rider jumps onto a sled (known as a skeleton) and proceeds - belly down and head first - to slide down the track. The track has fifteen turns and drops 104 m in elevation from top to bottom. …
5. ### Physics

In the sport of skeleton a participant jumps onto a sled (known as a skeleton) and proceeds to slide down an icy track, belly down and head first. In the 2010 Winter Olympics, the track had sixteen turns and dropped 126 m in elevation …
6. ### Physics

In the sport of skeleton a participant jumps onto a sled (known as a skeleton) and proceeds to slide down an icy track, belly down and head first. In the 2010 Winter Olympics, the track had sixteen turns and dropped 126 m in elevation …
7. ### physics

In the sport of skeleton a participant jumps onto a sled (known as a skeleton) and proceeds to slide down an icy track, belly down and head first. In the 2010 Winter Olympics, the track had sixteen turns and dropped 126 m in elevation …
8. ### physics

In the sport of skeleton a participant jumps onto a sled (known as a skeleton) and proceeds to slide down an icy track, belly down and head first. In the 2010 Winter Olympics, the track had sixteen turns and dropped 126 m in elevation …
9. ### physics

A 30kg sled(with rider) slides without friction down a small, ice covered hill. On the first run the sled starts from rest and its speed at the bottom of the hill is 8.50m/s. On the second run the sled starts with a speed of 1.50m/s …
10. ### Anatomy and Physiology

Hello! Thanks for checking my question out! ____ 7. The bones of the extremities are parts of the (1 point) a) appendicular skeleton. b) axial skeleton. c) long bone group. d) medial skeleton. My Answer: A Could someone please check …

More Similar Questions