🔍 Key Concepts

• The basic physics definition of acceleration in mechanics • How velocity and acceleration are related (think: what changes into what) • Difference between distance, speed, and acceleration in motion

💭 Think About

• Ask yourself: in general physics (not just vibration), what does acceleration measure about an object’s motion? • Which choice describes something that changes over time, and which quantity is it changing? • Look at the options that mention distance, speed, and velocity. Which of these is closest to the technical definition of acceleration?

✅ Before You Answer

• Confirm that distance and frequency are NOT the same as acceleration in basic physics terms. • Identify which option describes a change per unit time, not just a value at an instant. • Make sure the correct choice involves velocity and how it changes, not just how big it is.