Which answer accurately describes the difference between speed and velocity? question 8 options: speed is the result of a change in direction. velocity is the result of a change in acceleration. speed only requires distance. velocity requires direction. gravity affects speed. gravity does not affect acceleration. speed measures a change in inertia. inertia remains the same in velocity.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.