Physics laws of motion

    Cards (44)

    • What is a scalar quantity?
      A quantity with just size (magnitude)
    • What is a vector quantity?
      A quantity with size and direction
    • What are examples of scalar quantities?
      • Mass
      • Distance
      • Energy
      • Time
      • Power
      • Speed
    • What are examples of vector quantities?
      • Displacement
      • Acceleration
      • Weight
      • Velocity
      • Gravitational field strength
      • Momentum
    • How do vectors represent direction and magnitude?
      Using arrows to show direction and length
    • What does Newton's first law state about resultant force?
      If resultant force is 0, motion remains constant
    • What happens to a stationary object with no resultant force?
      It remains stationary
    • What does resultant force indicate when not in equilibrium?
      Object is accelerating, decelerating, or changing direction
    • What are the two types of forces?
      • Contact forces
      • Non-contact forces
    • What is an example of a contact force?
      Friction
    • What is an example of a non-contact force?
      Magnetic force
    • What does Newton's third law state about interacting objects?
      They exert equal and opposite forces on each other
    • What are the characteristics of a third law pair of forces?
      Equal size, opposite direction, different objects
    • What is speed defined as?
      How far something travels in a given time
    • What is velocity defined as?
      Speed in a given direction
    • What is the average walking speed?
      1. 5 m/s
    • What is the average running speed?
      3 m/s
    • What is the average cycling speed?
      6 m/s
    • What is acceleration defined as?
      The rate of change of velocity
    • How is change in velocity calculated?
      Final velocity - starting velocity
    • What is Newton's second law formula?
      F = ma
    • What does the center of mass represent?
      The point where gravity appears to act
    • What happens to an irregular object when it hangs?
      It falls directly below the pivot
    • What happens to a regular object regarding lines of symmetry?
      It falls along its lines of symmetry
    • What does the gradient represent in a velocity-time graph?
      Velocity or speed
    • What is inertia?
      The tendency of an object to resist changes in motion
    • What is the relationship between mass and weight?
      Mass is not equal to weight
    • What is weight defined as?
      The force acting on an object due to gravity
    • What does gravitational field strength depend on?
      The location of the object in the universe
    • What is the unit of weight?
      Newtons (N)
    • What is the unit of mass?
      Kilograms (kg)
    • How is weight calculated?
      Weight = mass x gravitational field strength
    • What is the unit of gravitational field strength?
      Newtons per kilogram (N/kg)
    • What are the parts of the practical experiment described?
      Part 1:
      • I = Force (changing mass on holder)
      • D = Acceleration (light gate and data logger)
      • C = Mass (moving masses from trolley to holder)

      Part 2:
      • I = Mass of trolley (added more masses)
      • D = Acceleration (light gate + data logger)
      • C = Force (keep the mass on the holder)
    • What is the relationship between acceleration and mass of the trolley?
      Acceleration is directly proportional to mass
    • What is the relationship between force and acceleration?
      Force is directly proportional to acceleration
    • What is the relationship between force and mass?
      Force is directly proportional to mass
    • What is the relationship between mass and acceleration?
      Mass is inversely proportional to acceleration
    • What is the formula for calculating acceleration?
      a=a =ΔVt \frac{\Delta V}{t}
    • What is the formula for calculating force?
      F=F =ma ma