A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction is 0.27.

If she slides 19 m across the level stretch, what's h? Express your answer with the appropriate units.

Question

Reagan Meyer

Physics

9 April, 11:09

A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction is 0.27.

If she slides 19 m across the level stretch, what's h? Express your answer with the appropriate units.

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Answers (1)

Know the Answer?

Jacqueline Liu · Answer 1

Velocity at the bottom of height h

= √2gh

deceleration on rough horizontal surface

= μg, μ is coefficient of friction

=.27 x 9.8

= 2.646 m / s²

v² = u² - 2as

0 = 2gh - 2 x 2.646 x 19

h = 2 x 2.646 x 19 / 2 x 9.8

= 5.13 m

A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction is 0.27.If she slides 19 m across the level stretch, what's h? Express your answer with the appropriate units.

A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction is 0.27.

If she slides 19 m across the level stretch, what's h? Express your answer with the appropriate units.