Gravity and motion
I can describe and predict the relationship between gravity and the motion of...
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General
In this lesson, students will look at how the forces of gravity affect the motion of objects. They will learn all about how objects fall and accelerate.
Standards
NGSS:
MS-PS2-2
MS-PS2-4
Learning objective
Students will be able to describe and predict the relationship between gravity and the motion of an object.
Introduction
Students will review the concept of gravity. They will also discuss which object (baseball, tennis ball, feather) when dropped from the same height simultaneously will hit the ground first.
Instruction
Talk to students about velocity and acceleration. Explain how the force of gravity causes objects to fall toward the ground at the same rate. Use the diagram in the lesson for a visual representation. Students will calculate the velocity of a golf ball in a practice problem.
Next, explain that air resistance is a force that opposes the motion of objects as they move through the air. The lesson will return to the feather from the introduction and why it hit the ground last.
Explain that terminal velocity is the maximum velocity that an object reaches when it is falling. Students will look at this concept with the example of parachutes.
Quiz
Students will respond to ten multiple-choice and short-answer questions.
Closing
Students will recall what they learned in the lesson and complete an exit slip.
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Gynzy is an online teaching platform for interactive whiteboards and displays in schools.
With a focus on elementary education, Gynzy’s Whiteboard, digital tools, and activities make it easy for teachers to save time building lessons, increase student engagement, and make classroom management more efficient.