Physics Chapter on Speed and Velocity
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Questions and Answers

What is the average speed of a car that travels 96 km in 1.2 hours?

  • 90 km/h
  • 96 km/h
  • 72 km/h
  • 80 km/h (correct)

    • How do you convert an average speed of 80 km/h to m/s?

  • 28.8 m/s
  • 20 m/s
  • 22.2 m/s (correct)
  • 30 m/s

    • What is the average velocity of a person who rides 2 km east and then 2 km north in 2 hours?

  • 1.41 km/h North East (correct)
  • 2 km/h North
  • 2 km/h
  • 2.82 km/h North East

    • What happens to a car's velocity when it turns a corner while traveling at a constant speed?

    <p>It changes due to direction alteration.</p> Signup and view all the answers

    What is the total distance covered by a person riding a bicycle 2 km east and then 2 km north?

    <p>4 km</p> Signup and view all the answers

    What is the equivalent of 20 km/h in m/s?

    <p>5.55 m/s</p> Signup and view all the answers

    If a person walks 4 m to the blackboard and then back 3 m, what is the total distance covered?

    <p>7 m</p> Signup and view all the answers

    What is the displacement of James after walking 3 km north, 4 km east, and 3 km south?

    <p>5 km</p> Signup and view all the answers

    How long does it take a train traveling at 8 m/s to cover a distance of 400 m?

    <p>40 seconds</p> Signup and view all the answers

    What is the average speed of a person who travels 300 m north and then 400 m east in 2 minutes?

    <p>6.25 m/s</p> Signup and view all the answers

    If a bicycle travels 300 m north and then 400 m east, what is the total displacement?

    <p>500 m</p> Signup and view all the answers

    In which unit is speed commonly expressed in physics?

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

    What is the correct conversion of 1 cm to meters?

    <p>0.01 m</p> Signup and view all the answers

    What does the arrow in a vector represent?

    <p>Both magnitude and direction</p> Signup and view all the answers

    Which step is NOT part of the vector addition process?

    <p>Using only one arrow for multiple vectors</p> Signup and view all the answers

    What is the resultant velocity of the airplane flying East at 120 km/h with a wind blowing east at 20 km/h?

    <p>140 km/h</p> Signup and view all the answers

    What is the purpose of setting up a direction reference in vector addition?

    <p>To improve the accuracy of the vector diagram</p> Signup and view all the answers

    What does the term 'resultant' refer to in vector addition?

    <p>The line joining the tail of the first vector to the head of the second</p> Signup and view all the answers

    Which statement is correct regarding the Pythagoras theorem in the context of vectors?

    <p>It helps in determining the magnitude of the resultant of perpendicular vectors</p> Signup and view all the answers

    When drawing vector diagrams, why should vectors not be drawn too small?

    <p>It reduces the accuracy of the vector representation</p> Signup and view all the answers

    What does a tangent (tan θ) value indicate in relation to a triangle?

    <p>The ratio of the opposite side to the adjacent side</p> Signup and view all the answers

    What is the total distance traveled in the given scenario?

    <p>16m</p> Signup and view all the answers

    How is displacement defined in the content?

    <p>The straight line distance from starting to finishing point</p> Signup and view all the answers

    What is the displacement when the runner completes the race around the circular track?

    <p>0m</p> Signup and view all the answers

    What is the value of the displacement from the starting position in the initial scenario?

    <p>12m</p> Signup and view all the answers

    What mathematical theorem is used to calculate the displacement?

    <p>Pythagorean theorem</p> Signup and view all the answers

    Which of the following statements about displacement is true?

    <p>Displacement can be negative</p> Signup and view all the answers

    What represents the circumference of the circular track in the example?

    <p>400m</p> Signup and view all the answers

    Which formula is used to find the radius of the circular track in the example?

    <p>$C = 2 ext{π}r$</p> Signup and view all the answers

    What does the gradient of a velocity-time graph represent?

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

    What is the primary advantage of using graphical analysis of motion?

    <p>It provides a continuous picture of motion</p> Signup and view all the answers

    How can displacement be calculated from a velocity-time graph?

    <p>By calculating the area under the graph</p> Signup and view all the answers

    What happens to the initial position when calculating final position using displacement?

    <p>It is added to the displacement</p> Signup and view all the answers

    What do the units of the area under an acceleration-time graph represent?

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

    Which of the following statements is true about velocity and speed?

    <p>Velocity is a vector quantity while speed is a scalar quantity</p> Signup and view all the answers

    What is required to calculate an object's final velocity from an acceleration-time graph?

    <p>The initial velocity and the area under the graph</p> Signup and view all the answers

    What is the function of the area under a velocity-time graph?

    <p>Calculate total distance covered</p> Signup and view all the answers

    What is the primary purpose of using physics in accident reconstruction?

    <p>To determine the speed and direction of vehicles before the collision</p> Signup and view all the answers

    Which of the following accurately describes displacement?

    <p>It requires a direction and is a vector quantity.</p> Signup and view all the answers

    How is velocity defined in terms of displacement and time?

    <p>Velocity is displacement divided by time.</p> Signup and view all the answers

    What distinguishes a vector quantity from a scalar quantity?

    <p>Vector quantities provide information about direction.</p> Signup and view all the answers

    In a one-dimensional motion, what do the positive and negative numbers represent?

    <p>Direction along the number line</p> Signup and view all the answers

    What is true about both distance and displacement?

    <p>They can both be described using the same symbol.</p> Signup and view all the answers

    Which statement correctly defines distance?

    <p>It is the length of the actual path traveled without direction.</p> Signup and view all the answers

    Which of the following describes the average speed of a moving object?

    <p>Distance traveled divided by the time taken.</p> Signup and view all the answers

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    Grade 11 Physics Module 2: Motion (Kinematics) PDF

    Description

    Test your understanding of speed and velocity concepts in this physics quiz. The questions cover average speed calculations, conversions between units, and the difference between distance and displacement. Hone your knowledge and prepare for your physics exams!

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