Lesson M8.3.1

M8.3.1 Weight and motion under constant acceleration Quiz: Pearson Edexcel Maths, Unit 18

20 questions

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Lesson M8.3.1, Weight and motion under constant acceleration: 20 multiple choice questions for the Pearson Edexcel Maths (9MA0), Unit 18: Forces and Newton's laws, written with Revision Ninja.

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The 20 questions

  1. What standard acceleration due to gravity is used in UK A-level maths mechanics?

    • 9.81 m s^-2
    • 10 m s^-2
    • 9.8 m s^-1
    • 9.8 m s^-2
  2. What is the formula relating weight W, mass m, and gravitational acceleration g?

    • W = m/g
    • W = m + g
    • W = mg
    • W = g/m
  3. If air resistance is ignored, what type of motion does a falling object experience?

    • Constant speed
    • Deceleration
    • Constant acceleration
    • Increasing acceleration
  4. What is the direction of the weight force acting on any object near Earth?

    • Horizontally
    • Vertically upwards
    • Perpendicular to surface
    • Vertically downwards
  5. Which SUVAT variable represents constant acceleration in vertical motion problems?

    • a
    • s
    • u
    • v
  6. What is the initial velocity of an object dropped from rest from a cliff?

    • Unknown
    • Maximum
    • 9.8 m s^-1
    • Zero
  7. Which units are correct for measuring the weight of an object?

    • Newton-seconds
    • Grams
    • Newtons
    • Kilograms
  8. Which units are correct for measuring the mass of an object?

    • Joules
    • Newtons
    • Kilograms
    • Metres
  9. An object of mass 4 kg falls freely. What is the magnitude of its weight?

    • 9.8 N
    • 39.2 N
    • 392 N
    • 4 N
  10. A particle is projected vertically upwards. What is its instantaneous velocity at its maximum height?

    • Maximum speed
    • -9.8 m s^-1
    • 0 m s^-1
    • 9.8 m s^-1
  11. An object of mass 5 kg accelerates downwards at 9.8 m s^-2. What is the resultant force?

    • 0 N
    • 5 N
    • 9.8 N
    • 49 N
  12. What happens to the magnitude of a falling object's speed each second under gravity?

    • Decreases by 9.8 m s^-1
    • Stays constant
    • Doubles
    • Increases by 9.8 m s^-1
  13. A ball is thrown upwards with initial speed u. What is its acceleration at the peak?

    • u m s^-2
    • Zero
    • 9.8 m s^-2 downwards
    • 9.8 m s^-2 upwards
  14. What assumption is always made regarding acceleration when applying SUVAT equations?

    • Proportional to displacement
    • Zero
    • Variable
    • Constant
  15. A stone is dropped and hits the ground after 2 s. What is its downward speed just before impact?

    • 19.6 m s^-1
    • 9.8 m s^-1
    • 39.2 m s^-1
    • 4.9 m s^-1
  16. An object takes 3 s to fall from rest. How far does it fall?

    • 88.2 m
    • 14.7 m
    • 29.4 m
    • 44.1 m
  17. A 2 kg mass is lifted upwards with an acceleration of 2 m s^-2. What is the tension?

    • 4 N
    • 15.6 N
    • 23.6 N
    • 19.6 N
  18. Why are horizontal and vertical motions treated independently in particle mechanics?

    • Forces are perpendicular
    • Velocities are equal
    • Mass is zero
    • Gravity acts horizontally
  19. A package of weight W is dropped from a stationary hot-air balloon. What is its initial acceleration?

    • 9.8 m s^-2
    • W m s^-2
    • Dependent on mass
    • Zero
  20. What term describes motion where the only force acting on the body is gravity?

    • Free fall
    • Static motion
    • Terminal velocity
    • Equilibrium

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