AQA Physics Paper 2 (Forces & Energy)

Which is the best description of what is meant by a good thermal insulator?

• A.   A material that doesn’t allow thermal energy to move through it easily.
• B.   A material that doesn’t allow any thermal energy to move through it easily.
• C.   A material that doesn’t allow cold to move through it easily.
• D.   A material that does allow cold to move through it easily

In order to do work, energy is

• A.  transferred
• B.  used up
• C.  lost
• D.  lost or transferred

When a ball is suspended from a string what forces are acting on the ball:

• A.   Weight and string tension.
• B.   Weight and uphrust.
• C.   Weight and air resistance.
• D.   weight and gravity

Door hinge is about 1.5 m away from handle, and a boy pushes the door handle with a force of 4 N. The moment of force will be:

• A.  6 N m
• B.  5.5 N m
• C.  2.66 N m
• D.  2.5 N m

When a melon is dropped onto a pavement which of the following best describes what happens to energy?

• A.   The gravitational potential store reduces and the heat store of the surroundings increases.
• B.   The melons gains kinetic energy, which is lost when it hits the floor.
• C.   The melon’s energy store steadily reduces as it falls.
• D.   The gravitational potential store increases and the heat store of the surroundings increases.

When hot tea cools down we can say the following about energy:

• A.   The tea absorbs energy from the surroundings.
• B.   The surroundings absorb energy from the tea.
• C.   The surroundings transfer energy to the tea.
• D.   Energy is lost because the tea cools down.

If 90J of energy goes into a torch and 50J is transferred by lighting, how much is transferred by heating?

• A.   0 J
• B.   40J
• C.   50J
• D.   90J

Which of the following statements is correct about the forces acting on a cup of tea and a pencil sitting on the same table?

• A.  The forces are the same in both.
• B.  The table pushes up more against the cup than the pencil.
• C. The table pushes up more against the pencil than the cup.
• D. There are no forces because the objects are still.

When a battery-powered torch is switched on two processes occur. Which statement best describes these processes?

• A.   Useful heating and useful lighting.
• B.   Not useful heating and not useful lighting.
• C.  Not useful heating and useful lighting
• D.  Useful heating and not useful lighting

Four people rode bikes up hill. In each case energy was transferred from the chemical store in the person to the gravitational potential store in the person and the bike. In which case was the rate of energy transfer greatest?

• A.   400J were transferred in 40s
• B.   200j were transferred in 10s
• C.   300J were transferred in 10s
• D.   300J were transferred in 20 s