Gr 10 Physical Sciences Ch 16: Acceleration
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Questions and Answers

What is the unit of average acceleration?

  • Metre per second cubed (m·s^(−3))
  • Metre per second (m·s^(−1))
  • Metre squared per second (m²·s^(−1))
  • Metre per second squared (m·s^(−2)) (correct)

    • What does acceleration indicate?

  • How the position of an object changes with time
  • How the force on an object changes with time
  • How the mass of an object changes with time
  • How the velocity of an object changes with time (correct)

    • Why is it important to note that acceleration is a vector quantity?

  • Because it is a scalar quantity
  • Because it has only direction
  • Because it has both magnitude and direction (correct)
  • Because it has only magnitude

    • What is the formula for calculating average acceleration?

    <p>Δv / Δt</p> Signup and view all the answers

    What can be said about an object that is experiencing positive acceleration?

    <p>It is speeding up</p> Signup and view all the answers

    What is the term for the change in velocity over a time interval?

    <p>Delta velocity</p> Signup and view all the answers

    Why can we simplify our discussion by referring to acceleration rather than distinguishing between average and instantaneous acceleration?

    <p>Because we often deal with scenarios involving constant acceleration</p> Signup and view all the answers

    What does a negative acceleration indicate?

    <p>The object is slowing down</p> Signup and view all the answers

    What is the purpose of calculating average acceleration?

    <p>To understand how quickly an object's velocity changes over time</p> Signup and view all the answers

    When can we simplify our discussion by referring to acceleration rather than distinguishing between average and instantaneous acceleration?

    <p>When dealing with scenarios involving constant acceleration</p> Signup and view all the answers

    What can be said about the direction of an object's motion based on its acceleration?

    <p>The acceleration alone does not provide information about the object's velocity or its direction of motion</p> Signup and view all the answers

    What is the relationship between the magnitude of acceleration and the change in velocity?

    <p>The magnitude of acceleration is proportional to the change in velocity</p> Signup and view all the answers

    What is the significance of the sign of acceleration?

    <p>The sign of acceleration determines whether the object is speeding up or slowing down</p> Signup and view all the answers

    What is the change in velocity over a certain time interval called?

    <p>Delta velocity</p> Signup and view all the answers

    What can be said about an object experiencing a positive acceleration and a negative velocity?

    <p>The object is speeding up</p> Signup and view all the answers

    What is the purpose of distinguishing between average and instantaneous acceleration?

    <p>To understand the rate of change of velocity over a short time interval</p> Signup and view all the answers

    What is the primary purpose of calculating average acceleration?

    <p>To understand the change in velocity over time</p> Signup and view all the answers

    What is the difference between positive and negative acceleration?

    <p>Positive acceleration indicates the object is speeding up, while negative acceleration indicates the object is slowing down</p> Signup and view all the answers

    What is the significance of the vector nature of acceleration?

    <p>It indicates how the motion is changing</p> Signup and view all the answers

    What is the relationship between the magnitude of acceleration and the change in velocity?

    <p>The magnitude of acceleration is directly proportional to the change in velocity</p> Signup and view all the answers

    What is the benefit of simplifying the discussion to refer to acceleration rather than distinguishing between average and instantaneous acceleration?

    <p>It simplifies the concepts and calculations</p> Signup and view all the answers

    What is the significance of the sign of acceleration in relation to the object's velocity?

    <p>It determines whether the object is speeding up or slowing down</p> Signup and view all the answers

    What is the result of a constant acceleration on an object's motion?

    <p>The object's velocity changes at a constant rate</p> Signup and view all the answers

    What is the purpose of calculating the average acceleration of an object?

    <p>To understand the object's motion over a specific time interval</p> Signup and view all the answers

    What is the primary purpose of calculating the average acceleration of an object over a certain time interval?

    <p>To understand the change in the object's velocity over that time interval</p> Signup and view all the answers

    If an object's velocity and acceleration have opposite signs, what can be inferred about the object's motion?

    <p>The object is slowing down</p> Signup and view all the answers

    What can be said about the direction of an object's acceleration if it is experiencing a positive acceleration?

    <p>The acceleration is in the same direction as the velocity</p> Signup and view all the answers

    What is the significance of the vector nature of acceleration?

    <p>It has both magnitude and direction</p> Signup and view all the answers

    What is the result of a constant acceleration on an object's motion?

    <p>The object's velocity changes in a linear manner</p> Signup and view all the answers

    What can be said about an object experiencing a negative acceleration?

    <p>The object's velocity is decreasing</p> Signup and view all the answers

    What is the relationship between the change in velocity and the acceleration of an object?

    <p>The acceleration is directly proportional to the change in velocity</p> Signup and view all the answers

    What can be inferred about an object's motion if its acceleration is zero?

    <p>The object is moving at a constant velocity</p> Signup and view all the answers

    What is the primary reason why acceleration is a fundamental concept in physics?

    <p>It describes how quickly an object's velocity changes over time</p> Signup and view all the answers

    What is the result of a positive acceleration on an object's motion?

    <p>The object is speeding up</p> Signup and view all the answers

    What information does acceleration alone not provide about an object's motion?

    <p>The object's direction of motion</p> Signup and view all the answers

    What is the significance of the vector nature of acceleration?

    <p>It means acceleration has both magnitude and direction</p> Signup and view all the answers

    What can be said about an object's motion if its acceleration is zero?

    <p>The object's velocity is constant</p> Signup and view all the answers

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