A Stalled Car Is Being Pushed Up a Hill at Constant

question 44

Multiple Choice

A stalled car is being pushed up a hill at constant velocity by three people.The net force on the car is

• A) zero.
• B) up the hill and equal to the weight of the car.
• C) down the hill and equal to the weight of the car.
• D) up the hill and greater than the weight of the car.
• E) down the hill and greater than the weight of the car.

---

Definitions:

Action Potentials

Electrical impulses in neurons or muscle cells that occur when the membrane potential of a cell rapidly rises and falls.

Receptor Potentials

The electrical potential changes occurring in sensory neurons’ receptors in response to stimulating agents, leading to the generation of action potentials.

Sensory Adaptation

The condition in which the response to a stimulus is reduced even though the stimulus continues at the same intensity.

Membranous Labyrinth

A complex system of fluid-filled tubes and sacs found within the inner ear, crucial for balance and hearing.