Edexcel International A Level Physics

Topic Questions

International A LevelPhysicsEdexcelTopic Questions1. Mechanics & MaterialsForces & Momentum

Forces & Momentum

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1
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The graph shows how terminal velocity varies with mass for small spheres of equal diameter falling through a viscous liquid.

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Which of the following describes the gradient of the graph for a liquid of greater viscosity?

  • a greater gradient

  • a smaller gradient

  • a variable gradient

  • the same gradient

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1
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A person is pushing a trolley at a constant velocity.

The floor exerts a force P on the person, the person exerts a force Q on the trolley.

The trolley exerts a force R on the person and the total drag force on the trolley is S.

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Which pair of forces is a Newton's Third Law pair?

  • P and R

  • Q and R

  • Q and S

  • P and S

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2
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Which row of the table contains two units that are not equivalent?

  Unit 1 Unit 2
A J s–1 W
B kg m s–2 N s
C N kg–1 m s–2
D N m J

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3
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The diagram shows a rocket of mass m accelerating upwards with acceleration a.

The diagram represents the forces acting on the rocket.

q10-wph11-01-oct-2021-edexcel-int-as-and-a-level-phy

Which of the following equations gives the value of D?

  • D = T + m (g – a)

  • D = T + m (a + g)

  • D = T – m (g – a)

  • D = T – m (g + a)

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4
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A van travels along a straight, horizontal road at a constant velocity.

Which of the following statements is correct?

  • The frictional force of the road on the tyres can be ignored.

  • The frictional force of the road on the tyres is equal to the resultant force on the van.

  • The frictional force of the road on the tyres is in the direction of motion of the van.

  • The frictional force of the road on the tyres is in the opposite direction to the motion of the van.

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5
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A massive star exerts a gravitational force F subscript star on a small distant planet. The planet exerts a gravitational force F subscript planet on the star.

Which row of the table is correct?

      Magnitude of forces Direction of forces
  ☐ A F subscript planet space less than space F subscript star opposite
  ☐ B F subscript planet space less than space F subscript star the same
  ☐ C F subscript planet space equals space F subscript star opposite
  ☐ D F subscript planet space equals space F subscript star the same

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