Understanding Constant Motion
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Questions and Answers

What type of motion is exhibited by a diagonal straight line on a velocity-time graph?

  • Constant speed
  • Constant acceleration (correct)
  • No motion
  • Variable speed
  • How can acceleration be defined?

  • Change in position per unit time
  • Change in speed per unit distance
  • Change in time per unit distance
  • Change in velocity per unit time (correct)
  • What does a constant slope on a velocity-time graph imply?

  • Constant acceleration (correct)
  • Variable acceleration
  • No acceleration
  • Variable speed
  • If a car travels 144 km/h, what is its speed in m/s?

    <p>80 m/s</p> Signup and view all the answers

    Which quantity allows us to calculate acceleration using the formula: a = (v_f - v_i) / t?

    <p>Both initial and final speeds (v_f, v_i)</p> Signup and view all the answers

    What happens to an object moving at a constant speed?

    <p>It maintains the same speed</p> Signup and view all the answers

    If a car accelerates from 15 m/s to 21 m/s in 7 seconds, what is its average acceleration?

    <p>~0.86 m/s²</p> Signup and view all the answers

    What does a diagonal straight line on a position-time graph indicate?

    <p>Constant speed</p> Signup and view all the answers

    What does a diagonal straight line on a velocity-time graph indicate?

    <p>Constant acceleration</p> Signup and view all the answers

    How is acceleration calculated when given initial and final velocities?

    <p>$\frac{v_f - v_i}{t}$</p> Signup and view all the answers

    If a car accelerates from 20 m/s to 35 m/s in 5 seconds, what is its acceleration?

    <p>6 m/s²</p> Signup and view all the answers

    What happens to an object moving with constant acceleration?

    <p>Its velocity changes by the same amount each second</p> Signup and view all the answers

    In a position-time graph, a horizontal line indicates the object is:

    <p>At rest</p> Signup and view all the answers

    If a car moves at a speed of 60 km/h, what is its speed in m/s?

    <p>20 m/s</p> Signup and view all the answers

    A car decelerates from 30 m/s to 15 m/s in 4 seconds. What is its acceleration?

    <p>-4.5 m/s²</p> Signup and view all the answers

    What does a horizontal line on a velocity-time graph signify?

    <p>Constant speed</p> Signup and view all the answers

    How is acceleration defined?

    <p>$\frac{v_f - v_i}{t}$</p> Signup and view all the answers

    What kind of motion does a diagonal straight line on a position-time graph represent?

    <p>Uniform motion</p> Signup and view all the answers

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