SCIE-7_Q3-LESSON_7.2_Describing-and-Graphing-Motion

Page 1: Title Slide

• Saint Francis of Assisi College - Saint Anthony School

  • Describing and Graphing Motion

  • Website: www.stfrancis.edu.ph

Page 2: Learning Objectives

• Explain the difference between distance and displacement in everyday situations related to a reference point.

• Distinguish between speed and velocity using the concept of vectors.

• Describe uniform velocity.

Page 3: Understanding Motion

• Defined as the change in the position of an object over a period of time concerning a reference point.

  • Reference point: serves as a frame of reference to describe motion and quantify changes.

Page 4: Scalar Quantities

• Scalar quantities are measurements that provide magnitude without direction.

  • Examples include:

    • 120 kilometers

    • 50 kilograms

    • 20 hours

    • 35°C

Page 5: Vector Quantities

• Vector quantities provide both magnitude and direction.

  • Examples:

    • 120 km heading north

    • 100 miles per hour south

Page 6: Comparison of Scalars and Vectors

• Scalar Quantities:

  • Length, area, volume, mass, temperature, etc.

• Vector Quantities:

  • Displacement, velocity, acceleration, momentum, etc.

Page 7: Representation of Vectors

• Vectors are represented as arrows.

  • Head of the arrow indicates direction.

  • Length of the arrow is proportional to the value of the vector quantity.

Page 8: Distance and Displacement

• Displacement refers to the change in position or location of an object.

Page 9: Distance

• Distance is described in terms of the path length covered by an object.

Page 10: Relationship between Distance and Displacement

• Distance is dependent on the path traversed, while displacement is the straight-line distance between two points, including direction.

Page 11: Definitions and Rules

• Distance: Total length of actual path (scalar)

• Displacement: Vector pointing from the start to the end position, regardless of the path taken.

  • Important to define zero-point and directions (+ and -) when measuring motion on an axis.

Page 12: Calculating Linear Displacement

• Formula: X = Xf - Xi

  • Xf: Final position

  • Xi: Initial position

  • Delta (Δ) indicates a change in position.

  • Displacement can be positive (to the right) or negative (to the left).

Page 13: Conclusion Slide

• Thank You!

Page 14: Introduction to Speed and Velocity

• Speed and Velocity concepts introduction.

Page 15: Learning Objectives (Repeat)

• Same as earlier: Explaining distance vs. displacement, speed vs. velocity, and uniform velocity.

Page 16: Understanding Speed

• Speed describes motion in terms of how slow or fast something is.

  • Formula: Average Speed = Distance / Total Time

Page 17: Types of Speed

• Average Speed:

  • Describes the motion occurring over varying intervals; does not specify the exact rate at a moment.

• Instantaneous Speed:

  • Indicates how fast something is moving at a specific instant, like a speedometer reading.

Page 18: Reference for Examples

• See examples on pages 329-330.

Page 19: Calculating Average Speed

• Example: Jude rode 140 km around Russetville.

  • Use the formula: Speed = Distance / Time

• Includes tabulated time and calculated speed.

Page 20: Speed Calculation Answer Key

• Time (hour): 1, 2, 3, 4, 5, 6, 7

• Speed (kph): 140, 70, 47, 35, 28, 23, 20

Page 21: Understanding Velocity

• Velocity conveys both speed and direction as it is a vector quantity.

• Formula: Average Velocity = Displacement / Total Time

Page 22: Graphing Motion

• Analysis of fast, uniform speed and its representation on graphs.

Page 23: Storytelling with Graphs

• Motion graphs help visualize the movement of objects.

  • Independent variable on the x-axis, dependent variable on the y-axis.

Page 24: Reiteration of Graphing Motion

• Same information as above about graphs and their axes.

Page 25: Slope Interpretation

• The slope of distance vs. time graphs indicates speed or velocity.

  • Positive slope: Moving right at constant speed.

  • Negative slope: Moving left at constant speed.

  • Zero slope: Indicates no movement.

Page 26: Thank You Slide

• Thank you for listening!