A 60.0­kg skier starts from rest at the top of a ski slope of height 62.0 . Part A If frictional forces do −1.06×10 4 of work on her as she descends, how fast is she going at the bottom of the slope?

v = 29.35 m /s

Explanation:

potential energy at the height of 62m

= m g h , m is mass , g is acceleration due to gravity and h is height

= 60 x 9.8 x 62

= 36456 J

negative work done by friction = -10600 J

energy at the bottom = 36456 - 10600 = 25856 J

This energy will be in the form of kinetic energy . If v be velocity at the bottom

1/2 m v² = 25856

1/2 x 60 x v² = 25856

v = 29.35 m /s

i don't know that i agree with that but what's the question ?

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."