Jeffrey Piggott
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Quiz for AS Level Physics on Topic 5 Forces

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Jeffrey Piggott
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AS Level Physics Unit 5 Quiz on Forces

Pregunta 1 de 4

1

A wooden block of mass 0.60 kg is on a rough horizontal surface. A force of 12 N is applied to the block and it accelerates at 4.0 m.s^–2.
What is the magnitude of the frictional force acting on the block?

Selecciona una de las siguientes respuestas posibles:

  • A 2.4 N

  • B 9.6 N

  • C 14 N

  • D 16 N

Explicación

Pregunta 2 de 4

1

A horizontal force of 90N is used to push a box across a horizontal floor. The frictional force on the box is 50N.

What is the gain in kinetic energy of the box when it is moved through a distance of 6.0m?

Selecciona una de las siguientes respuestas posibles:

  • A 240 J

  • B 300 J

  • C 540 J

  • D 840 J

Explicación

Pregunta 3 de 4

1

A positive charge experiences a force F when placed at point X in a uniform electric field.
The charge is then moved from point X to point Y.
Distances r and s are shown on the diagram.
What is the change in the potential energy of the charge?

Selecciona una de las siguientes respuestas posibles:

  • A decreases by Fs

  • B increases by Fs

  • C decreases by Fr

  • D increases by Fr

Explicación

Pregunta 4 de 4

1

A submarine is in equilibrium in a fully submerged position.
What causes the upthrust on the submarine?

Selecciona una de las siguientes respuestas posibles:

  • A The air in the submarine is less dense than sea water.

  • B The sea water exerts a greater upward force on the submarine than the weight of the steel.

  • C The submarine displaces its own volume of sea water.

  • D There is a difference in water pressure acting on the top and bottom of the submarine.

Explicación

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