1.3 Representing Motion

• What are the four fundamental quantities used to describe motion in physics?

  Position, displacement, velocity, acceleration
• What type of systems are used to describe the motion of objects in physics?

  Coordinate systems
• How is average velocity calculated?

  Change in position / time
• Arrange the following steps in the correct order to describe the motion of an object using graphs:

  1️⃣ Represent motion using position-time graphs

  2️⃣ Analyze velocity-time graphs

  3️⃣ Calculate displacement from velocity-time graphs
• Which fundamental quantity describes the location of an object at a given time?

  Position
• The area under a velocity-time graph gives the displacement.


  True
• Displacement can be zero even if distance is not.


  True
• What is the definition of displacement in physics?

  Change in position
• What does displacement depend on?

  Initial and final positions
• Distance is always positive or zero.

  True
• Scalar quantities include distance, speed, mass, and temperature.
• The Cartesian coordinate system uses axes denoted as x, y, and z.
• What is the relationship between Cartesian and polar coordinates for y?

  $y =$$r \sin \theta$
• What is the definition of velocity?

  Rate of change of position
• What does the area under a velocity-time graph represent?

  Change in velocity
• The distance traveled is always equal to the magnitude of displacement.

  False
• Displacement can be negative or zero.

  True
• Distance is always positive or zero.


  True
• What are the Cartesian coordinates for a displacement vector of 5 km at 30 degrees?

  (4.33 km, 2.5 km)
• Average velocity is defined as displacement divided by total time
• Instantaneous velocity is the velocity at a specific moment in time.

  True
• The location of an object at a given time is called its position
• Arrange the fundamental quantities of motion in order of their dependence on time.

  1️⃣ Position

  2️⃣ Displacement

  3️⃣ Velocity

  4️⃣ Acceleration
• The area under a position-time graph represents displacement.

  False
• Displacement is a vector quantity with both magnitude and direction.


  True
• Displacement can be zero if the object returns to its starting point.


  True
• A scalar quantity is described by its magnitude
• How is a point defined in the polar coordinate system?

  (r, θ)
• In physics, coordinate systems are crucial for describing the position and motion of objects
• What are the Cartesian coordinates for a displacement of 5 km at 30 degrees?

  (4.33 km, 2.5 km)
• Match the type of velocity with its definition:

  Average Velocity ↔️ Displacement divided by total time

  Instantaneous Velocity ↔️ Velocity at a specific moment
• What is the average velocity of a cyclist who starts at 0 m at 0 s and reaches 200 m at 25 s?

  8 m/s
• Match the type of acceleration with its definition:

  Average Acceleration ↔️ Average change in velocity

  Instantaneous Acceleration ↔️ Acceleration at a specific moment
• Position-time graphs plot time on the x-axis and position on the y-axis.
• Position-time graphs are a visual way to represent the motion of an object by plotting time on the x-axis and position on the y-axis.
• Position-time graphs make it easy to interpret velocity from the slope of the line.
• Displacement is a vector quantity.


  True
• Velocity is the rate of change of position over time.


  True
• What is the formula for average acceleration?

  $a =$$\frac{\Delta v}{\Delta t}$
• What does the slope of a position-time graph represent?

  Velocity