Gr 10 Physical Sciences Ch 17: Kinetic energy
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Questions and Answers

What is the energy possessed by an object due to its motion?

  • Thermal energy
  • Kinetic energy (correct)
  • Potential energy
  • Electrical energy

    • What is the unit of kinetic energy?

  • Kilogram
  • Joule (correct)
  • Meter per second
  • Newton

    • What is the formula to calculate kinetic energy?

  • E_K = mv
  • E_K = mv^3
  • E_K = 1/2 mv^2 (correct)
  • E_K = 2mv^2

    • What is the effect of increasing the mass of an object on its kinetic energy?

    <p>It increases</p> Signup and view all the answers

    What happens to the potential energy of an object as it falls?

    <p>It decreases</p> Signup and view all the answers

    What is the relationship between the velocity of an object and its kinetic energy?

    <p>Kinetic energy increases with the square of the velocity</p> Signup and view all the answers

    What is the definition of kinetic energy in terms of the unit?

    <p>Energy measured in joules</p> Signup and view all the answers

    What is the significance of the velocity in the kinetic energy of an object?

    <p>It is a significant factor</p> Signup and view all the answers

    What is the effect of increasing the velocity of an object on its kinetic energy?

    <p>It increases by a factor of four</p> Signup and view all the answers

    What happens to the kinetic energy of an object as it loses potential energy?

    <p>It increases</p> Signup and view all the answers

    What is the relationship between the mass and kinetic energy of an object?

    <p>Kinetic energy increases linearly with the mass</p> Signup and view all the answers

    What is a characteristic of an object with a high kinetic energy?

    <p>It has a high velocity</p> Signup and view all the answers

    What is the result of the conversion of potential energy into kinetic energy?

    <p>The object maintains its energy</p> Signup and view all the answers

    What is the significance of the mass in the kinetic energy of an object?

    <p>It increases the kinetic energy</p> Signup and view all the answers

    What happens to the kinetic energy of two objects with the same velocity but different masses?

    <p>The heavier object has more kinetic energy</p> Signup and view all the answers

    What is the condition when an object has maximum kinetic energy?

    <p>When it is at the lowest point</p> Signup and view all the answers

    Which of the following factors does NOT affect the kinetic energy of an object?

    <p>Color of the object</p> Signup and view all the answers

    What happens to the kinetic energy of an object as it gains velocity?

    <p>It increases</p> Signup and view all the answers

    Why does a heavy truck have more kinetic energy than a lighter car moving at the same speed?

    <p>Because of its greater mass</p> Signup and view all the answers

    What is the result of the energy transformation as an object falls?

    <p>Kinetic energy increases and potential energy decreases</p> Signup and view all the answers

    What is the relationship between the kinetic energy of two objects with the same mass but different velocities?

    <p>The one with higher velocity has more kinetic energy</p> Signup and view all the answers

    Why is velocity a significant factor in the kinetic energy of an object?

    <p>Because it increases with the square of velocity</p> Signup and view all the answers

    What is the condition when an object has zero kinetic energy?

    <p>When it is at rest</p> Signup and view all the answers

    What is the unit of measurement for the mass of an object in the formula for kinetic energy?

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

    What is the main reason why a car traveling at 60 km/h has more kinetic energy than a bicycle traveling at 10 km/h?

    <p>Because the car has a higher velocity squared</p> Signup and view all the answers

    An object is dropped from a height of 50 meters. What happens to its kinetic energy as it falls?

    <p>It increases as the object's potential energy decreases</p> Signup and view all the answers

    Which of the following statements is true about kinetic energy?

    <p>It is directly proportional to the velocity of an object</p> Signup and view all the answers

    Two objects, A and B, have the same velocity but different masses. Which object has more kinetic energy?

    <p>Object B, because it has a higher mass</p> Signup and view all the answers

    What is the condition when the kinetic energy of an object is maximum?

    <p>When its velocity is maximum</p> Signup and view all the answers

    An object has a mass of 20 kg and a velocity of 5 m/s. What is its kinetic energy?

    <p>125 J</p> Signup and view all the answers

    Which of the following is a unit of kinetic energy?

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

    As an object falls from a height, its potential energy is converted into which type of energy?

    <p>Kinetic energy</p> Signup and view all the answers

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