Drawing displacement vectors in Motion – Class 9 Science Experiment

Chapter Name: Motion

Activity Name: Drawing displacement vectors in Motion

Activity Description:

Required Items:

1. Graph paper or plain paper
2. Pencil
3. Ruler

Step by Step Procedure:

1. Place the graph paper or plain paper on a flat surface.
2. Use a pencil and ruler to draw figures 6(a) and 6(b) representing the paths of the car.
3. Mark points A and B on each figure to indicate the initial and final positions of the car.
4. For each situation (figures 6(a) and 6(b)), draw a displacement vector: a. Choose a suitable scale for the displacement vector (e.g., 1 cm = 1 km). b. From point A, draw an arrow pointing towards point B to represent the displacement vector. c. Label the displacement vector with the appropriate magnitude and direction.

Experiment Observations:

1. The displacement vectors visually represent the car’s movement from its initial position to the final position for each path.
2. The length of the displacement vector shows the magnitude of the car’s displacement.
3. The direction of the displacement vector indicates the direction in which the car moved.

Precautions:

• Ensure the graph paper or plain paper is smooth and free of wrinkles to obtain accurate drawings.
• Use a sharp pencil and a ruler to draw straight and precise lines.
• Take care in selecting the scale for the displacement vectors to ensure they fit within the paper’s dimensions.

Lesson Learnt from Experiment:

This experiment helps us understand the concept of displacement in motion. Displacement is a vector quantity that describes the change in an object’s position from its initial point to its final point.

By drawing displacement vectors, we can visually grasp how the car moved along different paths and the distance and direction between its initial and final positions. This activity enhances our understanding of vector representation in motion analysis.