Physics Unit 1: Motion in One Direction Quiz
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Questions and Answers

What is the speed of a moving car that covers 500 m in 20 sec?

  • 25 km/h.
  • 20 km/h.
  • 20 m/sec.
  • 25 m/sec. (correct)
  • Which two factors are necessary for the description of motion?

  • Speed and time. (correct)
  • Time and area.
  • Distance and time.
  • Weight and length.
  • Which of the following is a correct unit for measuring speed?

  • Metre²/second.
  • Metre/second. (correct)
  • Metre/second².
  • Metre.second.
  • If a car travels a distance of 180 km at a regular speed of 90 km/h, how many hours does it need to cover this distance?

    <p>2 hours.</p> Signup and view all the answers

    What is defined as the covered distance within a unit time?

    <p>Speed.</p> Signup and view all the answers

    Study Notes

    Motion in One Direction: Key Concepts

    • Speed Calculation: A car covering 500 meters in 20 seconds has a speed of 25 km/h.
    • Motion Description Factors: Two main factors necessary for describing motion are speed and time.
    • Speed Measurement Units: Speed is commonly measured in meters per second (m/s) or kilometers per hour (km/h).

    Scientific Terms

    • Constant Speed Movement: An object that moves with uniform velocity in space is termed "uniform motion."
    • Change in Position: The term describing the change in an object's position over time is "displacement."

    Key Statements Completion

    • Physical Quantity in Motion: Velocity is a physical quantity used to describe and compare the motion of objects.
    • Distance Calculation: Distance can be calculated as speed multiplied by time (Distance = Speed x Time).
    • Time to Cover Distance: A car traveling 180 km at a steady speed of 90 km/h requires 2 hours to complete the journey.
    • Definition of Speed: Speed is defined as the distance traveled within a unit of time.

    Real-Life Application

    • Example of Motion: A car covering 150 km in 3 hours showcases speed calculation, with an average speed of 50 km/h.
    • Example of Constant Speed: A train operating at a consistent 70 km/h illustrates the concept of uniform motion in transportation.

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    Description

    Test your knowledge on the fundamental concepts of motion with this quiz based on Unit 1: Motion in One Direction. Answer questions related to speed, measurement, and the factors that describe motion. Perfect for reinforcing your understanding of basic physics principles.

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