The skiers kinetic energy will be 0 when:

0.09mgs = mv^2 / 2

s = v^2 / ( 2 * 0.09 * 9.81 )

= 563.3 m.

The skiers potential energy initially is:

mg 130 sin(28)

The loss through friction is:

0.09mg 130 cos(28)

(a)

Equating potential energy less friction loss to kinetic energy at the bottom:

130m * 9.81(sin(28) 0.09 cos(28)) = mv^2 / 2

v = sqrt[ 2 * 130 * 9.81(sin(28) 0.09cos(28)) ]

= 31.5 m/s.

(b)

The friction force on the level is 0.09mg.

The skiers kinetic energy will be 0 when:

0.09mgs = mv^2 / 2

s = v^2 / ( 2 * 0.09 * 9.81 )

= 563.3 m.

Ski Slides

i think you will fall down

This post is last updated on hrtanswers.com at Date : 1st of September – 2022