فيزياء (صباحي)
40 Questions
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فيزياء (صباحي)

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Questions and Answers

Which of the following is not a base quantity?

  • Electric current
  • Weight (correct)
  • Mass
  • Temperature

    • Which of the following is the SI unit for length?

  • Meter (correct)
  • Kelvin
  • Kilogram
  • Second

    • Which of the following is the SI unit for time?

  • Kilogram
  • Kelvin
  • Meter
  • Second (correct)

    • Which of the following is the SI unit for mass?

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

    Which of the following is the SI unit for temperature?

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

    Which of the following is the SI unit for electric current?

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

    Which of the following is the SI unit for luminous intensity?

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

    Which formula density?

    <p>Mass ÷ Volume</p> Signup and view all the answers

    What is the unit for work?

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

    What is the unit for power?

    <p>Watt (W)</p> Signup and view all the answers

    What is the unit for force?

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

    What is the formula for acceleration?

    <p>Change in Velocity ÷ Time</p> Signup and view all the answers

    What is the formula for pressure?

    <p>Force ÷ Area</p> Signup and view all the answers

    Which of the following is an example of a scalar quantity?

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

    Which of the following is an example of a vector quantity?

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

    What is the result of adding two vectors?

    <p>The vector sum</p> Signup and view all the answers

    Which of the following is an example of a vector quantity?

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

    What is the result of multiplying a vector by a scalar?

    <p>The product</p> Signup and view all the answers

    If a time is multiplied by a velocity, what is the resultant quantity?

    <p>Scalar quantity</p> Signup and view all the answers

    If a speed is multiplied by a time, what is the resultant quantity?

    <p>Scalar quantity</p> Signup and view all the answers

    If an acceleration is multiplied by a time, what is the resultant quantity?

    <p>Vector quantity</p> Signup and view all the answers

    Which branch of physics deals with the effect of forces on the motion of bodies?

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

    Which of the following is a vector quantity?

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

    What is the SI unit for distance?

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

    Which part of mechanics is concerned with the description of motion?

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

    What is the difference between distance and displacement?

    <p>Distance is a scalar quantity, while displacement is a vector quantity.</p> Signup and view all the answers

    Which of the following is an example of a vector quantity?

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

    Which of the following best describes the addition of two vectors when they are acting in opposite directions?

    <p>The magnitudes of the vectors are subtracted.</p> Signup and view all the answers

    Which of the following best describes Newton's first law of motion?

    <p>A body at rest will stay at rest, and a body in motion will stay in motion with a constant velocity, unless acted upon by an external force.</p> Signup and view all the answers

    What is the unit for force?

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

    Which of the following is the SI unit for mass?

    <p>Kilogram (kg)</p> Signup and view all the answers

    Which of the following best describes Newton's First Law of Motion?

    <p>A stationary object with no outside force will not move.</p> Signup and view all the answers

    Which of the following equations represents Newton's Second Law of Motion?

    <p>F = ma</p> Signup and view all the answers

    What is the mass of an object that experiences a force of 250 N and accelerates at a rate of 5 m/s^2?

    <p>50 kg</p> Signup and view all the answers

    What is the acceleration of an object with a mass of 60 kg when a force of 20 N is applied to it?

    <p>1.33 m/s^2</p> Signup and view all the answers

    Which of the following best describes Newton's Third Law of Motion?

    <p>All of the above.</p> Signup and view all the answers

    Which of the following is an example of a derived force?

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

    What is the force of friction between a block of ice that weighs 950 N and the ground if the coefficient of friction is 0.12?

    <p>114 N</p> Signup and view all the answers

    What is the force of friction between a 750 N object and a surface if the coefficient of friction (μ) is 0.25?

    <p>187.5N</p> Signup and view all the answers

    Which of the following is true about friction?

    <p>Friction always opposes motion</p> Signup and view all the answers

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