Three Identical Blocks Move Either on a Horizontal Surface, Up

question 14

Multiple Choice

Three identical blocks move either on a horizontal surface, up a plane, or down a plane, as shown below.They all start with the same speed and continue to move until brought to rest by friction.Rank the three situations according to the mechanical energy dissipated by friction, least to greatest.

• A)The same for all cases
• B)1, 2, 3
• C)1, then 2 and 3 tie
• D)3, 1, 2
• E)2, 1, 3

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Definitions:

Membrane

A thin layer of tissue or material that acts as a selective barrier, controlling the passage of substances in and out of cells or organelles.

Fontanels

Soft spots on a baby's skull where the bones have not yet fused, allowing for growth of the brain and skull during infancy.

Ossified

The process by which tissue is transformed into bone or a bony substance.

Epiphyseal Plates

Growth plates located at the ends of long bones where new bone growth occurs.