Imagine That You Are Going for a Ride in a Hot

question 4

Multiple Choice

Imagine that you are going for a ride in a hot air balloon at the Canowindra Balloon Challenge. While the balloon is rising at a speed of 2.0 m/s, you throw a small ball down at a speed of 5.0 m/s relative to your body. A person who measures the ball's velocity at the instant of release will find that the ball's velocity relative to the ground at that instant is

• A)2.0 m/s, up.
• B)3.0 m/s, down.
• C)3.0 m/s, up.
• D)5.0 m/s, down.
• E)12.8 m/s, down.

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Definitions:

K

The chemical symbol for potassium, an essential mineral and electrolyte involved in nerve function and fluid balance.

[Cl-]

The chloride ion, a chlorine atom that has gained one electron to achieve a stable electronic configuration, commonly found in salt compounds.

HAc

A common abbreviation for acetic acid, a weak organic acid with the formula CH3COOH, known for its sour taste and pungent smell.

K

Symbol for potassium, a chemical element with atomic number 19, essential for various functions in living organisms.