Page 10 - Science E-Book Prep.3 2024-2025 1st term unit1_Neat

Science Department
Prep.3

Lesson 2: "Graphic representation
of moving in straight lines"

Physicists use mathematical relations as graphs and tables to:

• Predict the relation between physical quantities.
• Understand the practical results.
• Describe physical phenomena.

1-Regular speed

• Activity :
To discover: representing uniform speed graphically

• Tools: A toy car operated by a battery – a smooth wooden board of about
3 meters – a metric ruler or a metric strip – a stop watch

1- Place the wooden board at a horizontal position.

2- Put two marks at a known distance on the wooden board Measure the
distance between them (d).

3- Operate the car, and during that, another student calculates the time (t)
necessary to cover this distance.

First Term 10