Physics paper 2

• What is the focus of the video mentioned in the study material?

  The video covers everything needed for the AQA GCC physics paper 2.
• What is the difference between scalar and vector quantities?

  A scalar has magnitude only, while a vector has both magnitude and direction.
• What is an example of a scalar quantity?


  Speed
• What is an example of a vector quantity?

  Velocity
• How are vectors typically represented in physics?

  Vectors are often represented using arrows, where the length indicates magnitude and the direction indicates direction.
• What are the scalar quantities mentioned in the study material?

  • Speed
  • Distance
  • Time
  • Energy
• What are the vector quantities mentioned in the study material?

  • Velocity
  • Displacement
  • Acceleration
  • Force
  • Momentum
• What are contact forces?

  Contact forces are experienced when objects are physically touching each other.
• Give an example of a contact force.


  Friction
• What are non-contact forces?

  Non-contact forces involve objects that are not physically touching but still experience a force between them.
• Name an example of a non-contact force.

  Magnetic force
• What is the relationship between weight and gravitational field strength?

  The weight of an object is dependent on the gravitational field strength.
• What is the equation that links weight, mass, and gravitational field strength?

  Weight = Mass × Gravitational Field Strength
• What units are used to measure weight, mass, and gravitational field strength?


  Weight is measured in Newtons, mass in kilograms, and gravitational field strength in Newtons per kilogram.
• Why is it a misconception to say that weight is the same as mass?

  Weight is a force measured in Newtons, while mass is a measure of matter measured in kilograms.
• What instrument is used to measure weight?

  A Newton meter or calibrated spring balance.
• Where does weight act on an object?

  Weight acts at a single point, the center of mass of the object.
• What is the resultant force?

  The resultant force is a single force that has the same effect as all the original forces acting together.
• If a 4 Newton force is added to another 4 Newton force in the same direction, what is the resultant force?

  8 Newtons in that same direction.
• If a 6 Newton force is acting in one direction and a 6 Newton force is acting in the opposite direction, what is the resultant force?

  0 Newtons.
• How can a single force acting at an angle be resolved?

  It can be resolved into two components that act at right angles to each other.
• How do you draw a scale diagram to find the resultant of two forces at right angles?

  Draw the horizontal component and vertical component to scale, then connect them to find the resultant force.
• What is a free body diagram?

  A free body diagram describes situations where several forces are acting on an object.
• In a free body diagram of an accelerating car, what forces are acting on it?

  Weight, normal contact force, friction, and thrust.
• What does it mean if all forces acting on an object are balanced?

  There is no resultant force, and the object will remain stationary or continue at a constant speed.
• What is the work done by a force on an object?

  Work is done when a force causes the object to move through a distance.
• What is the equation for work done?

  Work done = Force × Distance
• What are the units for work done, force, and distance?

  Work done is measured in Joules, force in Newtons, and distance in meters.
• What is the relationship between work done against friction and temperature?

  Work done against friction results in a temperature increase.
• What is deformation in physics?


  Deformation refers to changes in shape of an object due to applied forces.
• What are the two types of deformation?

  Elastic and inelastic deformation.
• What are the differences between elastic and inelastic deformation?

  • Elastic deformation: Reversed when the force is removed (e.g., elastic band).
  • Inelastic deformation: Not fully reversed when the force is removed (e.g., squashed plastic bottle).
• What does Hook's law state?

  Hook's law states that the extension of an elastic object is directly proportional to the force applied, provided the limit of proportionality is not exceeded.
• What is the equation for Hook's law?

  Force = Spring Constant × Extension (F = K × e)
• What units are used for force, spring constant, and extension in Hook's law?

  Force is measured in Newtons, spring constant in Newtons per meter, and extension in meters.
• What does the limit of proportionality indicate?

  The limit of proportionality is the point at which Hook's law is no longer obeyed, and extension is no longer directly proportional to the force applied.
• What happens when a material passes its elastic limit?

  When a material passes its elastic limit, its deformation becomes inelastic and it cannot return to its original shape.
• What is elastic potential energy in a spring?

  Elastic potential energy is the energy stored in a spring when it is compressed or stretched.
• What is the equation for elastic potential energy?

  Elastic Potential Energy = \(\frac{1}{2} \times \text{Spring Constant} \times \text{Extension}^2\) or $E_e =$$\frac{1}{2} K e^2$
• What are the units for elastic potential energy, spring constant, and extension?

  Elastic potential energy is measured in Joules, spring constant in Newtons per meter, and extension in meters.