A Projectile Is Dropped, and Reaches the Ground at 140

question 362

Multiple Choice

A projectile is dropped, and reaches the ground at 140 m/s. How long does it take the projectile to reach ground? (Assume the position function is , where a = -10 .)

• A) 7 s
• B) 28 s
• C) 4.47 s
• D) 14 s
• E) 3.16 s

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Definitions:

Frost

The formation of thin ice crystals on the ground or objects outside when the temperature falls below the freezing point of water.

Grapefruit Crop

The yield or harvest of grapefruit from a plantation or farm within a specific period.

Mayonnaise

A thick, creamy sauce or dressing made from oil, egg yolks, lemon juice or vinegar, and seasonings.

Spring Frost

An unexpected freeze during springtime that can damage or kill new plant growth and negatively impact agricultural production.