A 20-M Long String Is Tied to a 3

question 28

Multiple Choice

A 2.0-m long string is tied to a 3.0-kg rock and the rock is twirled around in a circle at a constant speed.The speed of the rock is such that the string makes an angle of 45 degrees with the horizontal.What is the speed of the rock?

• A)2.8 m/s
• B)4.0 m/s
• C)3.7 m/s
• D)4.4 m/s
• E)5.0 m/s

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Definitions:

Family Stress

The tension and strain experienced by a family unit due to various internal or external pressures.

Hormone Production

The biological process by which endocrine glands produce substances that act as chemical messengers to regulate various functions of the body.

Puberty

The developmental phase in which a child's body transitions into an adult body capable of sexual reproduction.

Secondary Sex Characteristics

Physical traits that emerge at puberty unrelated to the reproductive organs, such as breast development in females and facial hair in males.