Motion: Speed and Graphs
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Questions and Answers

What is the SI unit of speed?

  • Kilometers per hour (km/h)
  • Meters per second (m/s) (correct)
  • Kilograms
  • Miles per hour (mph)

    • What is the formula for calculating average speed?

  • $\frac{\text{time}}{\text{distance}}$
  • $\text{distance} \times \text{time}$
  • $\frac{\text{distance}}{\text{time}}$ (correct)
  • $\frac{\text{time}}{\text{speed}}$

    • What does the slope of a distance-time graph represent?

  • Acceleration
  • Distance
  • Speed (correct)
  • Time

    • What is the atomic number of an element?

    <p>The number of protons in the nucleus</p> Signup and view all the answers

    What determines the chemical properties of an element?

    <p>The number of electrons in the outermost shell</p> Signup and view all the answers

    What is the significance of isotopes of an element?

    <p>They have different numbers of protons and neutrons</p> Signup and view all the answers

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