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Motion in a straight line Grade 10 Science lesson 02 Quiz 03

O/LScienceMotion in a straight lineEnglishEasy10 questions

Free G.C.E. O/L Science MCQ quiz on Motion in a straight line with 10 questions in English medium. Answer each question, see the correct answer and explanation straight away, and get your score at the end. Use the study section below to review every question and answer.

සාමාන්‍ය පෙළ Science බහුවරණ ප්‍රශ්න නොමිලේ පුහුණු වන්න.

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About this quiz

Master Motion in a Straight Line: Free Online Quiz & MCQ Practice for Grade 10 Science (Lesson 02)Strengthen your understanding of physics fundamentals with this free, interactive online quiz on Motion in a Straight Line (Grade 10 Science, Unit 02). Whether you are revising for unit tests, term exams, or national syllabus assessments, this practice test is designed to sharpen your problem-solving skills, clarify conceptual doubts, and boost your exam confidence.Linear motion is one of the most heavily tested physics topics in secondary school science. This quiz breaks down standard multiple-choice questions (MCQs), covering everything from scalar and vector quantities to motion graph interpretations and equations of motion.Key Topics Covered in This Quiz:Distance vs. Displacement: Differentiating between scalar and vector measurements, reference points, and direction.Speed and Velocity: Calculating uniform speed, average speed, instantaneous velocity, and unit conversions ($m/s$, $km/h$).Acceleration & Deceleration: Understanding positive acceleration, uniform acceleration, and retardation with real-world scenarios.Displacement-Time ($s-t$) Graphs: Reading gradients to find velocity, identifying stationary states, and interpreting uniform motion.Velocity-Time ($v-t$) Graphs: Calculating acceleration from slopes and finding total displacement/distance from the area under the graph.Linear Motion Equations: Solving standard kinematics problems using $v = u + at$, s = ut + 1/2at2, and v2 = u2 + 2as.Key Features & Benefits:Instant Grading & Step-by-Step Solutions: Get your score immediately along with answer keys to learn from your mistakes on the spot.Curriculum-Aligned Questions: Structured according to national and international secondary school science syllabi to reflect real exam question styles.Timed or Untimed Practice: Build mental calculation speed and analytical reasoning under exam conditions.100% Free & Device Friendly: Practice on your mobile, tablet, or PC without mandatory subscriptions or hidden paywalls.Who Should Take This Test?Grade 10 Science students preparing for Lesson 02 classroom assessments and term tests.O/L candidates revising foundational physics modules.Teachers and tutors looking for a digital formative assessment tool for their students.

All questions & answers (10)

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  1. Q1. In a velocity-time graph, what does a straight line sloping downwards from left to right indicate?

    • A)Uniform acceleration
    • B)Uniform speed
    • C)Uniform deceleration
    • D)Zero motion
    Show answer & explanation

    Answer: C) Uniform deceleration

    A downward-sloping line indicates that velocity is decreasing uniformly over time, representing deceleration.

  2. Q2. If an object travels with a non-uniform speed, which speed is calculated by dividing total distance by total time?

    • A)Instantaneous speed
    • B)Uniform speed
    • C)Average speed (mean speed)
    • D)Terminal velocity
    Show answer & explanation

    Answer: C) Average speed (mean speed)

    When speed changes constantly, the overall rate is expressed as average or mean speed.

  3. Q3. Which of the scientists or concepts is associated with the downward acceleration experienced by freely falling bodies?

    • A)Centripetal force
    • B)Gravitational acceleration
    • C)Friction
    • D)Air resistance
    Show answer & explanation

    Answer: B) Gravitational acceleration

    Gravitational acceleration is the acceleration caused by Earth's gravitational attraction on falling bodies.

  4. Q4. A body moves along a straight line with a constant velocity of 10 m s−1 for 3 s. What is the distance travelled?

    • A)10 m
    • B)20 m
    • C)30 m
    • D)3.33 m
    Show answer & explanation

    Answer: C) 30 m

    Distance = velocity × time = 10 m s−1 × 3 s = 30 m.

  5. Q5. When two displacements are in opposite directions along the same straight line, how are they combined?

    • A)Added directly as scalars
    • B)Multiplied together
    • C)Subtracted or added with opposite signs
    • D)Ignored
    Show answer & explanation

    Answer: C) Subtracted or added with opposite signs

    Displacements in opposite directions have opposite algebraic signs and are combined accordingly (e.g., positive forward, negative backward).

  6. Q6. What is the unit of measurement for distance and displacement?

    • A)Seconds (s)
    • B)Meters (m)
    • C)Kilograms (kg)
    • D)Newtons (N)
    Show answer & explanation

    Answer: B) Meters (m)

    Both distance and displacement are lengths measured in meters (m).

  7. Q7. If an object's position-time graph (displacement-time graph) is a horizontal line parallel to the time axis, what does it signify?

    • A)The object is moving at a constant high speed
    • B)The object is accelerating
    • C)The object is stationary (at rest)
    • D)The object is falling freely
    Show answer & explanation

    Answer: C) The object is stationary (at rest)

    A horizontal displacement-time line means position does not change as time passes, so the object is at rest.

  8. Q8. What is the primary difference between speed and velocity?

    • A)Speed is a vector, velocity is a scalar
    • B)Speed is a scalar, velocity is a vector
    • C)Both have directions
    • D)Neither has units
    Show answer & explanation

    Answer: B) Speed is a scalar, velocity is a vector

    Speed is scalar (magnitude only), whereas velocity is a vector (magnitude and direction).

  9. Q9. An object starts from rest and accelerates uniformly. If its velocity after 2 s is 4 m s−1, what is its acceleration?

    • A)1 m s−2
    • B)2 m s−2
    • C)4 m s−2
    • D)8 m s−2
    Show answer & explanation

    Answer: B) 2 m s−2

    Acceleration = (4 - 0) / 2 = 2 m s−2.

  10. Q10. If a vehicle moving in a straight line comes to a complete stop from a velocity of 20 m s−1 in 5 s, what is its deceleration?

    • A)2 m s−2
    • B)4 m s−2
    • C)5 m s−2
    • D)100 m s−2
    Show answer & explanation

    Answer: B) 4 m s−2

    Acceleration = (0 - 20) / 5 = -4 m s−2, meaning the deceleration is 4 m s−2.

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