A Skier of Mass 50 Kg Is Moving at Speed

question 66

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:

Postsynaptic Membrane

The region of a neuron that receives and responds to neurotransmitters from the presynaptic neuron during synaptic transmission.

Receptor

A specialized cell or group of nerve endings that responds to changes in the environment, such as chemicals, heat, or light.

Neurotransmitter

Chemicals released by neurons to transmit signals to other neurons or muscles, facilitating communication within the nervous system.

Axon Terminal

The endpoint of a neuron's axon where neurotransmitters are released to transmit signals to another neuron or effector cell.