Lesson R2

R2 Newton's second law Quiz: AQA Maths, Unit 12

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson R2, Newton's second law: 20 multiple choice questions for the AQA Maths (7357), Unit 12: Mechanics, written with Revision Ninja.

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The 20 questions

  1. Which expression is Newton's second law for a body of constant mass?

    • F = ma
    • F = m/a
    • F = mv
    • F = a/m

  2. Newton's second law states that the resultant force on a body of constant mass equals:

    • Mass divided by acceleration
    • Acceleration divided by time
    • Mass times velocity
    • Mass times acceleration

  3. Which combination of base units equals the newton?

    • kg s^-2
    • kg m s^-1
    • kg m^2 s^-2
    • kg m s^-2

  4. A body of mass 4 kg has an acceleration of 3 m s^-2. What is the resultant force?

    • 12 N
    • 7 N
    • 1.33 N
    • 0.75 N

  5. A resultant force of 20 N acts on a 5 kg body. What is its acceleration?

    • 4 m s^-2
    • 100 m s^-2
    • 0.25 m s^-2
    • 15 m s^-2

  6. A 1 kg particle has resultant force 12 N east and 5 N north. What is the magnitude of its acceleration?

    • 12 m s^-2
    • 13 m s^-2
    • 17 m s^-2
    • 7 m s^-2

  7. A 2 kg particle experiences a resultant force (3i + 4j) N. What is its acceleration?

    • 1.5i + 2j m s^-2
    • 6i + 8j m s^-2
    • 0.5i + 2j m s^-2
    • 3i + 4j m s^-2

  8. A lift of mass 500 kg is pulled upwards by a tension of 6000 N, with g = 9.8 m s^-2. What is its upward acceleration?

    • 12 m s^-2
    • 1.2 m s^-2
    • 9.8 m s^-2
    • 2.2 m s^-2

  9. A car of mass 1200 kg has a driving force of 3000 N and a resistance of 600 N. What is its acceleration?

    • 2 m s^-2
    • 3.6 m s^-2
    • 2.5 m s^-2
    • 0.5 m s^-2

  10. A 6 kg block on a smooth horizontal surface starts from rest under a constant 18 N force. How far does it travel in 4 s?

    • 12 m
    • 48 m
    • 6 m
    • 24 m

  11. A body's mass doubles while the force acting on it also doubles. What happens to its acceleration?

    • It doubles
    • It stays the same
    • It quadruples
    • It halves

  12. Which description of mass in F = ma is correct?

    • Its speed when at rest
    • The acceleration produced per unit force
    • Its weight in newtons
    • A measure of the body's resistance to change in its motion

  13. A 3 kg object has forces of 10 N east and 6 N west acting on it. What is its acceleration?

    • 2 m s^-2 west
    • 16/3 m s^-2 east
    • 4/3 m s^-2 east
    • 4 m s^-2 east

  14. A force of 10 N acts at 30 degrees above the horizontal. What is its horizontal component, to 1 decimal place?

    • 8.7 N
    • 10.0 N
    • 17.3 N
    • 5.0 N

  15. Perpendicular forces of 12 N and 5 N act on a 2 kg body. What is the magnitude of its acceleration?

    • 17 m s^-2
    • 6.5 m s^-2
    • 3.5 m s^-2
    • 8.5 m s^-2

  16. A 2 kg particle has forces (4i - 2j) N and (xi + 5j) N, and acceleration (3i + 1.5j) m s^-2. What is x?

    • 4
    • 2
    • -2
    • 6

  17. A 2 kg body starts from rest with a 10 N force for 3 s, then a 4 N force for 3 s, both in the same direction. What is its final speed?

    • 18 m s^-1
    • 15 m s^-1
    • 12 m s^-1
    • 21 m s^-1

  18. A resultant force of 10 N acts on a 5 kg body and increases its velocity from 2 m s^-1 to 12 m s^-1. How long does this take?

    • 1 s
    • 5 s
    • 10 s
    • 2 s

  19. A 1000 kg car is driven by a 2500 N force and accelerates at 1 m s^-2. What is the resistance?

    • 1500 N
    • 3500 N
    • 1000 N
    • 2500 N

  20. An 800 kg lift moves downward and decelerates uniformly at 2 m s^-2, with g = 10 m s^-2. What is the tension in the cable?

    • 6400 N
    • 8000 N
    • 9600 N
    • 12800 N

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