A Ball Is Thrown Vertically Upward from the Surface of the Earth

question 85

Multiple Choice

A ball is thrown vertically upward from the surface of the earth. The ball rises to some maximum height and falls back toward the surface of the earth. Which one of the following statements concerning this situation is true if air resistance is neglected?

• A)As the ball rises, its acceleration vector points upward.
• B)The ball is a freely falling body for the duration of its flight.
• C)The acceleration of the ball is zero when the ball is at its highest point.
• D)The speed of the ball is negative while the ball falls back toward the earth.
• E)The velocity and acceleration of the ball always point in the same direction.

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Definitions:

Groundwater

Water that is stored underground in soil or between rocks, supplying wells and springs, and playing a crucial role in the hydrological cycle.

Landslide

A mass movement of rock, earth, or debris down a slope due to gravity.

Pressure

The force exerted by something against a surface, usually measured in units such as Pascal (Pa) or pounds per square inch (psi).

Basaltic Lava

A type of lava originating from the mantle, characteristically dark and rich in magnesium and iron, with low viscosity.