Physics Fundamentals
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Questions and Answers

What is the SI unit for mass?

  • Grams (g) (correct)
  • Seconds (sec)
  • Liters (l)
  • Meters (m)

    • Which law states that an object in motion (or at rest) will tend to stay in motion (or at rest) unless acted upon by another force?

  • Law of Gravity
  • Newton’s THIRD Law: Law of Reciprocal Action
  • Newton’s FIRST Law: Law of Inertia (correct)
  • Newton’s SECOND Law: Law of Acceleration

    • What is the formula for force (F) according to Newton’s SECOND Law?

  • $F = m∙a$ (correct)
  • $F = m/a$
  • $F = m + a$
  • $F = a/m$

    • Which unit is used to measure time in the SI system?

    <p>Seconds (sec)</p> Signup and view all the answers

    What is the amount of energy required to change an object from a state of rest to a state of motion?

    <p>Work</p> Signup and view all the answers

    Which law states that for every action, there is an equal and opposite reaction?

    <p>Newton’s THIRD Law: Law of Reciprocal Action</p> Signup and view all the answers

    What is the SI unit for length?

    <p>Meters (m)</p> Signup and view all the answers

    Which law states that acceleration of an object is proportional to force and is inverse to the mass of the object?

    <p>Newton’s SECOND Law: Law of Acceleration</p> Signup and view all the answers

    What is the SI unit for volume?

    <p>Liters (l)</p> Signup and view all the answers

    What is the unit of force most commonly used?

    <p>Newton (N)</p> Signup and view all the answers

    What is the equation for calculating potential energy?

    <p>$PE = m \cdot g \cdot h$</p> Signup and view all the answers

    What is the standard unit of pressure?

    <p>Pascal (Pa)</p> Signup and view all the answers

    What is the equation for kinetic energy?

    <p>$KE = \frac{1}{2} mv^2$</p> Signup and view all the answers

    What is the equation for work done?

    <p>$W = F \cdot d$</p> Signup and view all the answers

    What is the equation for force?

    <p>$F = m \cdot a$</p> Signup and view all the answers

    What is the most commonly used unit for energy?

    <p>Joule (J)</p> Signup and view all the answers

    What is the equation for acceleration?

    <p>$a = \frac{v}{t}$</p> Signup and view all the answers

    What is the equation for pressure?

    <p>$P = \frac{f}{a}$</p> Signup and view all the answers

    What is the mathematical expression for the force of gravity?

    <p>$Fg = G \cdot \frac{m1 \cdot m2}{r^2}$</p> Signup and view all the answers

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