A Skier of Mass 50 Kg Is Moving at Speed

question 47

Multiple Choice

A skier of mass 50 kg is moving at speed 10 m/s at point P₁ down a ski slope with negligible friction.What is the skier's kinetic energy when she is at point P₂,20 m below P₁?

• A)2500 J
• B)9800 J
• C)12300 J
• D)13100 J
• E)15000 J

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Definitions:

Coral Reefs

Marine structures made of the calcium carbonate skeletons of coral organisms, which are home to diverse ecosystems and protect coastlines from erosion.

Modern Locations

Contemporary or current places of interest or where specific events or activities occur.

Continental Crust

The Earth's outer layer comprising granite-rich, less dense rock that makes up the continents.

Oceanic Crust

The part of the Earth's crust that underlies the oceans, thinner and denser than the continental crust.