A skier on a hill has 4000J of kinetic energy and 3000J of potential energy. After sliding down the

hill a ways, their potential energy is 2000J.

a) Since they slid "down" the hill, what do you expect for change in potential energy (greater or

less) ? Why?

b) Assuming that there is no loss due to friction, what would be the kinetic energy at the second

position? (Use Ebefore = Eafter and show all steps)

c) Since there's always "some" friction loss, would the "actual" kinetic energy be less or more than

your answer in b) ?

Question

Physics

Chaz Nolan

2 August, 09:33

A skier on a hill has 4000J of kinetic energy and 3000J of potential energy. After sliding down the

hill a ways, their potential energy is 2000J.

a) Since they slid "down" the hill, what do you expect for change in potential energy (greater or

less) ? Why?

b) Assuming that there is no loss due to friction, what would be the kinetic energy at the second

position? (Use Ebefore = Eafter and show all steps)

c) Since there's always "some" friction loss, would the "actual" kinetic energy be less or more than

your answer in b) ?

+5

Answers (1)

Know the Answer?

Desmond Booth · Answer 1

a) Less because the kinetic energy of the skier increased as they descended down the kill in turn the potential energy dropped

sorry only have the a part