A Solid Sphere Starts from Rest and Rolls Down a Slope

question 65

Multiple Choice

A solid sphere starts from rest and rolls down a slope that is 5.1 m long.If its speed at the bottom of the slope is 4.3 m/s, what is the angle of the slope?

• A)10°
• B)15°
• C)20°
• D)30°
• E)cannot be calculated without knowing the mass and radius of the sphere

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Definitions:

NaOH

Sodium Hydroxide, a strong base used in chemical manufacturing, paper making, and as a drain cleaner.

HCl

Hydrochloric acid, a diatomic molecule consisting of hydrogen and chlorine; a strong, corrosive acid commonly used in a variety of industrial and laboratory processes.

Molality

A metric indicating the amount of solute per unit weight of solvent, calculated in moles of solute per kilogram of solvent.

Molarity

The quantification of how much solute is present in a solution, represented by moles of solute per liter of solution.