A 90-Kg Man Stands in an Elevator That Is Moving

question 61

Multiple Choice

A 90-kg man stands in an elevator that is moving up at a constant speed of 5.0 m/s. The force exerted by him on the floor is about:

• A) zero
• B) 90 N
• C) 880 N
• D) 450 N
• E) 49 N

---

Definitions:

Synaptic Vesicles

Small sacs within a neuron that store neurotransmitters, which are chemicals released to communicate with adjoining neurons at a synapse.

Dopamine System

A neural system involved in reward, motivation, and the regulation of mood, whose key neurotransmitter is dopamine.

Parkinson's Disease

A progressive neurological disorder characterized by motor symptoms such as tremors, stiffness, slowness of movement, and postural instability.

Forebrain

the anterior part of the brain, including the cerebral hemispheres, thalamus, and hypothalamus, responsible for sensory and associative functions.