A Ball Thrown Vertically from Ground Level Is Caught 3

question 29

Multiple Choice

A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground. Determine the initial speed of the ball.

• A) 19 m/s
• B) 4.7 m/s
• C) 10 m/s
• D) 34 m/s
• E) 17 m/s

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Definitions:

HA

Depending on context, this can refer to Hyaluronic Acid, a molecule involved in skin hydration and cellular functions, or Hemagglutinin, a protein on the surface of influenza viruses responsible for binding the virus to the host cell.

pH

A measurement system designed to determine the level of acidity or alkalinity in water-based solutions, marked on a continuum from 0 to 14.

K

In the context of chemistry, often represents the equilibrium constant, symbolizing the ratio of product concentrations to reactant concentrations at equilibrium.

pH

A numeric scale used to specify the acidity or basicity (alkalinity) of an aqueous solution, with 7 being neutral, values below 7 acidic, and above 7 basic.