Day 17 of 30
Acceleration introduction
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Learning Objective
Students will be able to explore acceleration.
In this lesson, we'll explore acceleration introduction. Scientific inquiry allows us to investigate and explain natural phenomena.
Force is a push or pull that can change an object's motion. Newton's Three Laws: (1) Inertia—an object at rest stays at rest; an object in motion stays in motion at constant velocity, unless acted upon by a net force. (2) F = ma—net force equals mass times acceleration; greater force = greater acceleration; greater mass = less acceleration for the same force. (3) Action-Reaction—for every action force, there is an equal and opposite reaction force. Gravity is an attractive force between all objects with mass; near Earth's surface, g ≈ 9.8 m/s². Friction is a force opposing motion between surfaces. Velocity is speed with direction; acceleration is the rate of change of velocity. These principles explain everything from falling objects to rocket launches.
As you work through today's material, pay attention to the examples and try to identify the patterns or strategies being used. This will help you apply these concepts to new problems.
Take notes on key points and make connections to what you've already learned in previous lessons.
To examine systematically through observation and experiment
Observable facts that support or refute a claim
Instructions
Materials Needed
- Lab notebook
- Investigation materials
- Safety equipment if needed
Teaching Tip
For this age group: Balance direct instruction with collaborative activities. Allow students to explain their thinking and make connections to prior knowledge when exploring acceleration introduction.