Forces

• What is the formula for weight in relation to mass and gravitational field strength?

  Weight = mass × gravitational field strength
• How is weight measured?

  Weight is measured in Newtons (N)
• What is the unit of mass?

  Mass is measured in kilograms (kg)
• What does mass represent in an object?

  Mass represents the amount of matter in an object
• What is the relationship between mass and weight?

  Weight is the result of gravity acting on mass
• What is terminal velocity?

  Terminal velocity is when an object is moving at a steady speed in a constant direction because the resultant force acting on it is zero
• What are scalar quantities?


  Scalar quantities only have magnitude
• What are vector quantities?

  Vector quantities have both magnitude and direction
• What is the difference between distance and displacement?

  Distance is the length something has traveled, while displacement is how far away an object is from the starting point
• How do you calculate speed?

  Speed = Distance traveled / Time
• What is velocity?


  Velocity is speed in a given direction
• What is acceleration?

  Acceleration is the rate of change of velocity
• What is momentum?

  Momentum is the product of mass and velocity
• What is weight measured in?

  Weight is measured in Newtons (N)
• What is the formula for calculating weight?

  Weight = mass × gravitational field strength
• What does it mean when the resultant force acting on an object is zero?

  It means the object is moving at a steady speed in a constant direction
• How do scalar and vector quantities differ in terms of their characteristics?

  Scalar quantities have only magnitude, while vector quantities have both magnitude and direction
• What is the significance of terminal velocity in motion?

  Terminal velocity indicates that the forces acting on an object are balanced, resulting in no further acceleration
• What will an object do if no resultant force acts on it?

  An object will continue in a straight line at a constant speed.
• What must be applied to make something move?

  A force must be applied.
• What is the resultant force?

  The overall force acting on an object in both the vertical and horizontal directions.
• What happens if an object has equal forces working on it in all directions?

  The object is in equilibrium and won’t change its speed
• How is velocity defined?

  Velocity is speed with direction.
• What does change in velocity over a specific time refer to?

  It refers to acceleration or deceleration.
• How do you calculate the resultant force?

  Resultant force = Subtract the smaller force from the bigger force.
• What does force do to an object?

  Force does "work" to move an object.
• What is the unit of force?

  The unit of force is Newton (N).
• What is the formula for work done?

  Work done (W) = Force (F) × Distance (S).
• What is the unit of work done?

  The unit of work done is Joule (J).
• What is the method for measuring the extension of a spring?

  1. Secure a clamp stand to the bench.
  2. Attach two clamps to the clamp stand.
  3. Attach the spring to the top clamp and a ruler to the bottom clamp.
  4. Adjust the ruler to be vertical and level with the top of the spring.
  5. Measure and record the unloaded length of the spring.
  6. Hang a 100 g slotted mass (0.98 N) from the spring and measure the new length.
  7. Add 100 g slotted masses and measure the new lengths until a total of 1,000 g is added.
• How much weight does a 100 g slotted mass carrier weigh in newtons?

  0.98 newtons (N)
• If you hang a total of 1,000 g on the spring, how many 100 g slotted masses do you need to add?

  10 slotted masses
• Why is it important to measure the unloaded length of the spring before adding weights?

  To establish a baseline for measuring extension
• What is the significance of adjusting the ruler to be vertical and level with the top of the spring?

  It ensures accurate measurement of the spring's extension
• What is the term used to describe a change in shape?

  Deformation
• What happens to elastic deformation when the force is removed?

  It is reversed
• What is inelastic deformation?

  It is not fully reversed when the force is removed, resulting in a permanent change in shape
• Give an example of an object that undergoes elastic deformation.

  A rubber band
• Give an example of an object that undergoes inelastic deformation.

  A metal drinks can
• What does Hooke's law describe?

  The relationship between the force applied to an elastic object and its extension