Question

gabriel is performing an experiment in which he is measuring the energy and work being done by a ball rolling down a hill. which statement best describes gabriels measurements?

• they will remain constant.
• they will both be recorded in joules.
• they will both be recorded in hertz.
• they will involve compressions.

Explanation:

• Energy and work are both measured in joules (J).
• The energy of the ball (potential energy converting to kinetic energy) changes as it rolls down the hill, so "They will remain constant" is incorrect.
• Hertz (Hz) is the unit for frequency, not for energy or work, so "They will both be recorded in hertz" is wrong.
• Compressions are related to concepts like in springs or sound waves in a different context (not directly relevant to general energy - work of a rolling ball), so "They will involve compressions" is not the best description.

Answer:

They will both be recorded in joules.