Lesson 3.02i

3.02i Projectile motion Quiz: OCR Maths, Unit 17

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.02i, Projectile motion: 20 multiple choice questions for the OCR Maths (H240), Unit 17: Kinematics, written with Revision Ninja.

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The 20 questions

  1. What horizontal acceleration is assumed for a simple projectile model?

    • Zero
    • Variable
    • -9.8 m/s²
    • 9.8 m/s²

  2. Which force is assumed to act on a projectile during flight?

    • Weight only
    • Drag and weight
    • Air resistance
    • Thrust only

  3. At maximum height, what is the vertical component of velocity?

    • -g
    • u sin θ
    • Maximum
    • Zero

  4. Which launch angle gives maximum horizontal range on flat ground?

    • 45 degrees
    • 60 degrees
    • 90 degrees
    • 30 degrees

  5. What is the horizontal component of initial velocity u at launch angle θ?

    • u / cos θ
    • u sin θ
    • u tan θ
    • u cos θ

  6. What is the vertical component of initial velocity u at launch angle θ?

    • u tan θ
    • u cos θ
    • u / sin θ
    • u sin θ

  7. What shape is the trajectory of a projectile under gravity?

    • Parabola
    • Ellipse
    • Hyperbola
    • Circle

  8. What primary simplification is made by modelling a projectile as a particle?

    • Ignores air resistance
    • Ignores mass
    • Ignores gravity
    • Ignores horizontal motion

  9. A projectile is launched at 20 m/s at 30 degrees. What is its horizontal speed?

    • 5√3 m/s
    • 20 m/s
    • 10√3 m/s
    • 10 m/s

  10. A projectile is launched horizontally at 15 m/s. What is its initial vertical speed?

    • 15 m/s
    • 0 m/s
    • 9.8 m/s
    • 4.9 m/s

  11. A particle is projected vertically upwards at 19.6 m/s. How long until it reaches peak height?

    • 4 seconds
    • 9.8 seconds
    • 2 seconds
    • 1 second

  12. A projectile has a velocity vector of 3i + 4j m/s. What is its speed?

    • 1 m/s
    • 5 m/s
    • 7 m/s
    • 12 m/s

  13. If the initial speed of a projectile is doubled, its maximum range is:

    • Halved
    • Doubled
    • Tripled
    • Quadrupled

  14. Using standard unit vectors where j is vertically upwards, what is the projectile acceleration vector?

    • -g j
    • g i
    • -g i
    • g j

  15. A projectile is in motion. Which vector quantity remains constant throughout flight?

    • Position
    • Velocity
    • Displacement
    • Acceleration

  16. A projectile has a total flight time of 6 seconds on flat ground. When is peak height reached?

    • 1.5 seconds
    • 6 seconds
    • 3 seconds
    • 4.5 seconds

  17. Which formula gives time of flight T for projection speed u at angle θ on flat ground?

    • 2u cos θ / g
    • u² sin 2θ / g
    • 2u sin θ / g
    • u sin θ / g

  18. In the cartesian trajectory equation, what geometric variable does the symbol x represent?

    • Path length
    • Horizontal displacement
    • Total distance
    • Vertical displacement

  19. Which trigonometric identity replaces sec² θ in deriving the cartesian trajectory equation?

    • 1 + tan² θ
    • 1 + cot² θ
    • tan² θ - 1
    • 1 - tan² θ

  20. If launch speed u is doubled at the same angle, how does maximum height H change?

    • 8H
    • 2H
    • 1.4H
    • 4H

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