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:

Bursitis

Inflammation of a bursa, typically one in the knee, elbow, or shoulder, that results in pain, swelling, and restricted movement.

Kyphosis

A spinal condition characterized by an excessive outward curvature of the spine, causing hunching of the back.

Phosphorus

A highly reactive, nonmetallic element essential to living organisms, involved in numerous cellular processes, including energy transfer and bone mineralization.

Phos

Short for phosphorus, a chemical element with the symbol P, essential for life and often found in the body's energy processing and bone structure.