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Forces (OCR GCSE Combined Science A (Gateway): Physics): Exam Questions

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Forces

11 mark

A skydiver falls from a plane.

q2-paper1-oct-nov2020-ocr-gcse-physics

What is the name of the downward force in the diagram?

  • Drag

  • Electrostatic

  • Mass

  • Weight

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2
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Which of the following is an example of a contact force?

  • An object experiencing weight.

  • A positive charge attracting a negative charge.

  • A submarine experiencing drag underwater.

  • Two magnets repelling.

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3
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Higher Tier Only

Which diagram shows a system in equilibrium?

b

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    41 mark

    Which of the pairs are contact forces?

    • Air resistance and gravity

    • Friction and gravity

    • Magnetism and normal contact force

    • Normal contact force and air resistance

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    51 mark

    Higher Tier Only

    Three forces, x, y and z act on a body.

    The body is in equilibrium.

    Which vector diagram shows the body in equilibrium?

    q7-paper3-specimen-ocr-gcse-physics

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      61 mark

      Higher Tier Only

      Three forces act on a box.

      fb

      Which arrow correctly shows the resultant force?

      Four arrows of equal length point from the right side of the box. Arrow A points up at an angle close to the vertical. Arrow B points at an angle just above the horizontal. Arrow C points horizontally. Arrow D points at an angle just below the horizontal.

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        7
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        Higher Tier Only

        Which of the following is not constant for an object in circular motion?

        • Speed

        • Radius

        • Velocity

        • Mass

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        81 mark

        Higher Tier Only

        Two forces act on an object from rest.

        A box is acted on by two forces. One arrow acts downwards, one acts to the right. Both are similar sizes.

        Which sentence describes the subsequent motion of the object?

        • The object moves diagonally down and right at constant velocity.

        • The object accelerates right and then accelerates down.

        • The object remains stationary.

        • The object accelerates diagonally down and right.

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        9
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        Higher Tier Only

        A skydiver is falling at terminal velocity. He has not yet opened his parachute.

        He opens his parachute.

        In the instant after the parachute opens, what is the direction of both the velocity of the skydiver, and his acceleration?

         

        Direction of the skydiver’s velocity

        Direction of the skydiver’s acceleration

        A

        upwards

        upwards

        B

        upwards

        downwards

        C

        downwards

        upwards

        D

        downwards

        downwards

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          101 mark

          Higher Tier Only

          Fig. 1.1 shows a skier being towed at a constant speed whilst sinking into the snow. 

          Fig. 1.1

          5-1-h-3a-skier-with-forces

          Which of the following relationships between the forces is true?

          • Force D = Force C

          • Force C > Force D

          • Force B > Force A

          • Force A < Force B

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