3 years ago

6. A skier starts from rest at the top of a frictionless incline of height 20.0 m. At

Physics

1 answer:

n200080 [17]3 years ago

6 0

Explanation:

a. KE at bottom = PE at top

½ mv² = mgh

v = √(2gh)

v = √(2 × 9.8 m/s² × 20.0 m)

v = 19.8 m/s

b. Work by friction = PE at top

mgμ d = mgh

d = h / μ

d = 20.0 m / 0.210

d = 95.2 m

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