A 25-Kg Stone Is Released from Rest and Falls Toward Earth

question 97

Multiple Choice

A 2.5-kg stone is released from rest and falls toward Earth.After 4.0 s, the magnitude of its momentum is:

• A)98 kg∙m/s
• B)78 kg∙m/s
• C)39 kg∙m/s
• D)24 kg∙m/s
• E)0 kg∙m/s

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Definitions:

ACh

Acetylcholine, a neurotransmitter in both the peripheral and central nervous systems involved in many functions including muscle activation and memory.

Antagonist

In pharmacology, a substance that blocks or dampens the effects of a neurotransmitter or hormone. In literature, the character who opposes the protagonist.

Opiate

A category of drugs naturally derived from the opium poppy plant that are used for pain relief but are also highly addictive.

Childbirth

The process of giving birth to a baby, ranging from the onset of labor to the delivery of the child.