radomes.openskiesproject.org
renny22002
renny22002 renny22002
  • 07-02-2017
  • Physics
Answered

Please Help ASAP!

A 40 kg-skier starts at the top of a 12-meter high slope. At the bottom, she is traveling 10 m/s. How much energy does she lose to friction? A.She doesn't lose any because mechanical energy is always conserved.

B.4,704 J

C2,000 J

D.2,704 J

Verified Answer :

HomertheGenius
HomertheGenius HomertheGenius
  • 17-02-2017

E p = m g h = 40 kg 9.8 m/s² 12 m = 4,704 J
E k = m v² / 2 = 40 kg * ( 10 m/s ) ² / 2 = 2,000 J
4,704 J - 2,000 J = 2,704 J
Answer:
D ) 2,704 J

Answer Link

Related Questions

If it costs 90 to feed a family of 3 for one week 3 points Unit 8 lesson 4 What is the cost to feed each person How much will it cost to feed a family of 5 for
What is 5 43
What Latin American products were exported during the late 1800s
in each rectangle what is the fraction that shows the area of one of the parts what is the area of each part
what is the correct name for MgF2
in triangle ABC the measure of
What would happen to a eukaryotic cell if all its mitochondria were destroyed It is life sciences
The simplest and smallest life form known is a virus a bacterium an archaean
solve for x 9x18 whats the answer
find the value of f2