Introduction To Kinematics

10 Questions

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Introduction To Kinematics

The following questions cover the content in Kinematics 1 (K1).


Questions and Answers
  • 1. 
    Which of the following are vector quantities?
    • A. 

      Speed

    • B. 

      Displacement

    • C. 

      Temperature

    • D. 

      Energy

  • 2. 
    A car accelerates from 20 i (m/s) to 50 i (m/s) in 5 seconds.
    • A. 30 i (m/s)
    • A.
    • B. 35 i (m/s)
    • B.
    • C. 6 i (m/s/s)
    • C.
  • 3. 
    A car accelerates from -10 i (m/s) to -40 i (m/s) in 4 seconds. What is its displacement over this time?[Answer in the format: "8 j (m)" , "-20 i (m)". Do not include the quotation marks.]
  • 4. 
    If an object is accelerating, then it must be speeding up.
    • A. 

      True

    • B. 

      False

  • 5. 
    A car is driving south at 35 m/s. The driver applies the brakes, causing the car to slow at the rate of 5 m/s/s. What displacement will the car have in 3 seconds?[Answer in the format: "2.5 j (m)" , "-20.8 i (m)". Do not include the quotation marks.]
  • 6. 
    If a bus has an acceleration of -3 i (m/s/s), then the bus is slowing down.
    • A. 

      True

    • B. 

      False

  • 7. 
    A car is driving eastward, when the driver applies the brakes, reducing the car's speed at the rate of 3 m/s/s. The car's velocity is reduced to 5 m/s eastward over an eastward displacement of 50 m. What was the car's initial velocity? State your answer to the tenths place.[Answer in the format: "5.0 j (m/s)" , "-20.6 i (m/s)". Do not include the quotation marks.]
  • 8. 
    A car's average speed can exceed its instantaneous speed.
    • A. 

      True

    • B. 

      False

  • 9. 
    A bicyclist covers 20 meters at 2 m/s, then covers the next 20 meters at 8 m/s.What is her average speed over the 40 meters?
    • A. 

      3.2 m/s

    • B. 

      4.0 m/s

    • C. 

      5.0 m/s

  • 10. 
    Which of the following are accelerations?
    • A. 

      20 i (m/s)

    • B. 

      -3.5 j (m/s/s)

    • C. 

      12 i (m/s/s)

    • D. 

      4.2 i (m/s)