A Skier of Mass 50 Kg Is Moving at Speed

question 67

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:

Here and Now

A term often used in psychotherapy emphasizing the importance of focusing on the present moment and the current circumstances in an individual's life.

Fulfill Full Potential

The achievement of the highest possible level of success or development in one’s personal, professional, or psychological capacities.

Therapist

A professional clinician who applies a system of therapy to help a person overcome psychological difficulties.

Humanistic Theorist

An individual who contributes to the development of humanistic psychology, focusing on personal growth, self-identity, and understanding through a lens of empathy and holistic consideration of the individual.