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!