The Gain in Speed Each Second for a Freely-Falling Object

question 70

Multiple Choice

The gain in speed each second for a freely-falling object is about

• A)0 m/s.
• B)5 m/s.
• C)10 m/s.
• D)20 m/s.
• E)depends on the initial speed.

---

Definitions:

Neurotransmitter

Chemical substances in the body that enable neurotransmission, transmitting signals across a chemical synapse from one neuron to another.

Dopamine

A neurotransmitter in the brain that plays a key role in regulating movement, mood, and reward.

Serotonin

A neurotransmitter in the brain that is critical in regulating mood, appetite, sleep, memory, and learning.

ACh

Acetylcholine, a neurotransmitter involved in many functions including muscle activation and memory.