Accelerating Objects Quiz
29 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is acceleration?

  • The speed of an object at a particular moment
  • A change in the velocity of an object over time (correct)
  • The rate of change of an object's mass
  • A change in the position of an object over time

    • How is acceleration measured?

  • Meters per second
  • Feet per second
  • Kilometers per hour
  • Meters per second per second (correct)

    • What is the acceleration due to gravity on the surface of the Earth?

  • +1.8 m/s/s
  • -9.8 m/s/s (correct)
  • -1.8 m/s/s
  • +9.8 m/s/s

    • If you drop a ball in mid-air, what happens to its velocity?

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

    What equipment is needed for the physics lab mentioned in the text?

    <p>Stopwatch and tape-measure</p> Signup and view all the answers

    In the physics lab experiment, why are four pieces of duct tape stuck at equal distances from each other?

    <p>To enable accurate timing and distance measurement</p> Signup and view all the answers

    What happens when the stopwatch lap button is pressed in the physics lab experiment?

    <p>The time taken for the ball to reach each marker is recorded</p> Signup and view all the answers

    What is the first step to analyze the data collected in the experiment?

    <p>Plot a velocity-time graph</p> Signup and view all the answers

    Why should the velocity numbers be negative when calculating velocities for each section?

    <p>Because the ball is going downwards</p> Signup and view all the answers

    What should you do to calculate the time to put into the equation for velocity in each section?

    <p>Subtract the time at which the ball reached one piece of duct tape from another to determine travel time</p> Signup and view all the answers

    What does the slope of the velocity-time graph represent?

    <p>Change in velocity over time which is acceleration</p> Signup and view all the answers

    Why might the calculated acceleration not match the expected value of -9.8?

    <p>Presence of air resistance slowing down the ball</p> Signup and view all the answers

    How can you improve accuracy when calculating velocities for each section?

    <p>Press the stopwatch button more accurately</p> Signup and view all the answers

    What factor could cause difficulties in obtaining an exact acceleration value?

    <p>Variation in air resistance during the experiment</p> Signup and view all the answers

    Why should the velocity numbers be negative when calculating velocities for each section?

    <p>To account for the downward motion of the ball</p> Signup and view all the answers

    What could be a reason for not obtaining an exact acceleration value in the experiment?

    <p>Averaging speeds instead of calculating instantaneous speeds</p> Signup and view all the answers

    What factor contributes to air resistance affecting the velocity of the ball in the experiment?

    <p>The texture of the ball's surface</p> Signup and view all the answers

    How does subtraction play a role in calculating velocity for each section in the experiment?

    <p>To determine how long it took to travel between specific points</p> Signup and view all the answers

    What does the slope of the velocity-time graph represent in the experiment?

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

    What importance does comparing the calculated acceleration to -9.8 hold in the experiment?

    <p>To evaluate proximity to expected gravitational acceleration</p> Signup and view all the answers

    How does using a time right in the middle of each section enhance accuracy in velocity calculations?

    <p>It provides more precise estimations of time</p> Signup and view all the answers

    What difficulties could arise when pressing the stopwatch button at the right time during the experiment?

    <p>Unable to determine time accurately</p> Signup and view all the answers

    In the physics lab experiment, what does an acceleration of -9.8 m/s/s indicate about the falling ball?

    <p>It is speeding up at a constant rate.</p> Signup and view all the answers

    If two different balls are dropped simultaneously from the same height in the experiment, what would be their acceleration rates relative to each other?

    <p>Both will accelerate downwards at -9.8 m/s/s.</p> Signup and view all the answers

    How does the velocity of a falling object change as it moves further from the surface of the Earth?

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

    What role does duct tape play in the physics lab experiment described in the text?

    <p>To ensure the ball drops straight down without deviation.</p> Signup and view all the answers

    If an object is free-falling in a vacuum, what value would its acceleration due to gravity be?

    <p>+9.8 m/s/s</p> Signup and view all the answers

    What happens to an object's acceleration if it is moving upwards but slowing down?

    <p>Acceleration remains positive but decreases in magnitude.</p> Signup and view all the answers

    Why do all objects accelerate at -9.8 m/s/s on the surface of the Earth according to the text?

    <p>Due to gravitational force.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser