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Which way will it move? Predict from the forces

3rd grade (Year 4 in England) · 16 questions · Common Core: NGSS.3-PS2-1 · England: KS2 Y3 Forces and magnets, KS3 Physics: Motion and forces (balanced forces)

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Date

Score/ 16

  1. Question 1

    True or false? Balanced forces do not change how an object is moving.

    • A. True
    • B. False

  2. Question 2

    A cyclist pedals harder than the air and road push back. What happens?

    • A. The bike moves backwards.
    • B. The bike slows down.
    • C. The bike speeds up.
    • D. The bike stays at exactly the same speed.

  3. Question 3

    A box is resting on smooth ice. It is pushed with 40 N to the left and 40 N to the right at the same time. What happens?

    40 N40 N
    • A. moves to the left
    • B. stays still
    • C. moves to the right

  4. Question 4

    True or false? A still object stays still if the forces on it are balanced.

    • A. True
    • B. False

  5. Question 5

    A cyclist pedals harder than the air and road push back. What happens?

    • A. The bike stays at exactly the same speed.
    • B. The bike slows down.
    • C. The bike moves backwards.
    • D. The bike speeds up.

  6. Question 6

    A box is resting on smooth ice. It is pushed with 30 N to the left and 15 N to the right at the same time. What happens?

    30 N15 N
    • A. moves to the left
    • B. stays still
    • C. moves to the right

  7. Question 7

    True or false? If two forces are unbalanced, the object moves towards the smaller force.

    • A. True
    • B. False

  8. Question 8

    Two teams pull a rope equally hard. What happens to the rope?

    • A. It stays where it is.
    • B. It moves towards the bigger team.
    • C. It snaps at once.
    • D. It moves up into the air.

  9. Question 9

    A box is resting on smooth ice. It is pushed with 35 N to the left and 30 N to the right at the same time. What happens?

    35 N30 N
    • A. moves to the left
    • B. stays still
    • C. moves to the right

  10. Question 10

    True or false? A book on a table has no forces acting on it.

    • A. True
    • B. False

  11. Question 11

    A cyclist pedals harder than the air and road push back. What happens?

    • A. The bike moves backwards.
    • B. The bike stays at exactly the same speed.
    • C. The bike slows down.
    • D. The bike speeds up.

  12. Question 12

    A box is resting on smooth ice. It is pushed with 45 N to the left and 45 N to the right at the same time. What happens?

    45 N45 N
    • A. moves to the left
    • B. stays still
    • C. moves to the right

  13. Question 13

    True or false? Balanced forces do not change how an object is moving.

    • A. True
    • B. False

  14. Question 14

    A cyclist pedals harder than the air and road push back. What happens?

    • A. The bike speeds up.
    • B. The bike stays at exactly the same speed.
    • C. The bike slows down.
    • D. The bike moves backwards.

  15. Question 15

    A box is resting on smooth ice. It is pushed with 35 N to the left and 55 N to the right at the same time. What happens?

    35 N55 N
    • A. moves to the left
    • B. stays still
    • C. moves to the right

  16. Question 16

    True or false? Unbalanced forces can make an object start, stop, speed up or turn.

    • A. True
    • B. False

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  1. True
  2. The bike speeds up.
  3. stays still
  4. True
  5. The bike speeds up.
  6. moves to the left
  7. False
  8. It stays where it is.
  9. moves to the left
  10. False
  11. The bike speeds up.
  12. stays still
  13. True
  14. The bike speeds up.
  15. moves to the right
  16. True