A Rock from a Volcanic Eruption Is Launched Straight Up

question 87

Multiple Choice

A rock from a volcanic eruption is launched straight up into the air with no appreciable air resistance.Which one of the following statements about this rock while it is in the air is correct?

• A)On the way up,its acceleration is downward and its velocity is upward,and at the highest point both its velocity and acceleration are zero.
• B)On the way down,both its velocity and acceleration are downward,and at the highest point both its velocity and acceleration are zero.
• C)Throughout the motion,the acceleration is downward,and the velocity is always in the same direction as the acceleration.
• D)The acceleration is downward at all points in the motion.
• E)The acceleration is downward at all points in the motion except that is zero at the highest point.

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Definitions:

Stated Value

A value that is assigned to a share of stock by the issuing company, which may bear no relation to its market value.

Par Value

Par value is the nominal or face value of a bond, share of stock, or coupon as stated by the issuer.

No-Par Common Stock

Shares issued without a par value, meaning their value is determined by the market rather than a set face value.

Stated Value

The nominal value assigned by the company to its no-par stock, which becomes the legal capital per share.