The Height of an Object T Seconds After It Is $s ( t ) = - 4.9 t ^ { 2 } + 250$

question 129

Multiple Choice

The height of an object t seconds after it is dropped from a height of 250 meters is $s ( t ) = - 4.9 t ^ { 2 } + 250$ . Find the time during the first 8 seconds of fall at which the instantaneous velocity equals the average velocity.

• A) 32 seconds
• B) \(19.6\) seconds
• C) \(6.38\) seconds
• D) 4 seconds
• E) \(2.45\) seconds

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Definitions:

Antibodies

Proteins produced by the immune system that recognize and bind to specific antigens, helping to protect the body from pathogens.

Cytotoxic T Cell

A type of immune cell capable of killing cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.

Killer Cell

A type of immune cell that can kill cancer cells, cells infected with viruses, or other damaged or dangerous cells.

Passive Immunity

The type of immunity obtained by the transfer of antibodies from one individual to another, such as a mother to her infant through breast milk, providing immediate but temporary protection.