yearly exam

• distance is the total path travelled
• What is the formula to calculate speed?

  Speed = distance/time or $v =$$\frac{s}{t}$
• What does the symbol V represent in physics?

  V represents velocity
• What does the symbol S represent in physics?

  S represents distance travelled
• What does the symbol T represent in physics?

  T represents time taken
• What are the types of motion graphs in physics?

  • Position-time graphs
  • Velocity-time graphs
• How is speed defined in physics?

  Speed is the rate of change of position of any object in any direction
• What is the definition of distance?

  Distance is the length of space between two points
• What is the definition of displacement?

  Displacement is the change in an object's position
• What is the definition of acceleration?

  Acceleration is the increase in speed or rate
• What is the definition of deceleration?

  Deceleration is the reduction in speed or rate
• How are speed and velocity related?

  Both refer to how fast an object is moving
• How do speed and velocity differ?

  Speed is the rate of change in distance, while velocity is the rate of change in displacement
• What is the formula for acceleration?

  $a =$$\frac{v - u}{t}$
• What do the symbols A, V, U, and T represent in the acceleration formula?

  A = acceleration, V = final speed, U = initial speed, T = time
• What are forces in physics?

  Forces are a push or pull that change the speed, shape, or direction of an object
• How are forces measured?

  Forces are measured in newtons
• What is the difference between balanced and unbalanced forces?

  • Balanced forces: Equal in all directions, resulting in no movement
  • Unbalanced forces: Unequal forces causing movement in the direction of the greater force
• What does Newton's first law state?

  An object will remain at rest or in uniform motion unless acted on by an external force
• What does Newton's second law state?

  The force acting on an object is equal to the mass of the object multiplied by its acceleration
• What does Newton's third law state?

  For every action, there is an equal and opposite reaction
• How does acceleration relate to changes in velocity and time?

  Acceleration is the change in velocity over a certain amount of time
• What causes acceleration to occur?

  Acceleration occurs when there's a change in speed and/or direction due to a net force acting on an object
• If an object has an initial speed of $u =$$5 \text{ m/s}$ and a final speed of $v =$$15 \text{ m/s}$ over a time of $t =$$2 \text{ s}$, what is the acceleration?


  $a =$$\frac{15 - 5}{2} =$$5 \text{ m/s}^2$
• What is the relationship between net force and unbalanced forces?

  Net force is the difference between unbalanced forces acting on an object
• What happens to an object when balanced forces act on it?

  The object experiences no movement
• What happens to an object when unbalanced forces act on it?

  The object moves in the direction of the greater force
• What is the unit of force?

  Newton
• What is the definition of inertia according to Newton's first law?

  Inertia is the tendency of an object to remain at rest or in uniform motion unless acted on by an external force
• How does mass relate to Newton's second law?

  Mass is a factor in determining the force acting on an object, as force equals mass times acceleration
• How do action and reaction forces work according to Newton's third law?

  Action and reaction forces are equal in magnitude and opposite in direction
• What is electricity?

  Electricity is a form of energy caused by the flow of electrons.
• How is electric current measured?

  Electric current is measured in amperes.
• What does voltage represent in a circuit?

  Voltage is the difference in electrical potential energy between two points in a circuit.
• In what unit is voltage measured?

  Voltage is measured in volts.
• What is resistance in an electrical context?

  Resistance is the opposition to the flow of current.
• How is resistance measured?

  Resistance is measured in ohms.
• What does Ohm's law define?

  Ohm's law defines the relationship between voltage, current, and resistance.
• What are the characteristics of a series circuit?

  • One big loop
  • Simplest kind of circuit
  • Cannot control individual light bulbs
  • If any component is faulty, the whole circuit stops working
  • More light bulbs make them duller
• What are the characteristics of a parallel circuit?

  • Components connected separately to the power supply
  • Current flows through each component separately
  • Each component can be switched off individually