/ I / the Phenomenon |
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There are 3 basic laws of motion.
[CER] DISCUSSION QUESTION:
Which law of motion is the most important? Make a claim then gather evidence to support and justify your claim throughout this lesson. |
/ Ii / Investigate
1. Investigating Inertia - investigate how inertia affects how an object moves.
2. LEGO racers - investigate Newton's 2nd law of motion using LEGO cars. 3. Motion Commotion - investigate how an object's motion can only be measured by an observer if the object is in a frame of reference that is moving relative to the observer. |
Discover and describe how force and mass affect the acceleration of objects.
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FORCES AND MOTION: BASICS GUIDE
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/ iII / Level Up!
During this lesson you will learn more about how to how you can predict an object’s motion, changes in motion, and stability.
✎Notes:
- For any pair of interacting objects, the force exerted by the first object on the second object is equal in strength to the force that the second object exerts on the first but in the opposite direction (Newton’s third law).
- The motion of an object is determined by the sum of the forces acting on it; if the total force on the object is not zero, its motion will change.
- The greater the mass of the object, the greater the force needed to achieve the same change in motion.
- For any given object, a larger force causes a larger change in motion.
- Forces on an object can also change its shape or orientation.
- All positions of objects and the directions of forces and motions must be described in an arbitrarily chosen reference frame and arbitrarily chosen units of size. In order to share information with other people, these choices must also be shared.
/ IV / choose your path
ACCOMPLISHED [+3 points]
Draw and explain how you could change an object's motion depending on the sum of the forces on the object both balanced and unbalanced. ADVANCED [+4 points]
To understand Newton's Second Law of motion, some students examined the effects of force and mass on the acceleration of a basketball. First, they kept a basketball at a constant mass of 600 grams and varied the amount force and found the following results. Which factors served as the independent and dependent variables in their first investigation? |
EXPERT [+5 points]
Plan an investigation to provide evidence that the change in an object's motion is due to the balanced or unbalanced forces action on the object and its mass. In your plan describe each of the following:
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/ V / Knowledge Check
Newton's second law of motion demonstrates that the acceleration of an object is affected by both the force exerted and the mass of the object. The more force exerted, the more acceleration is produced. The more mass the object has, the less acceleration is produced.
/ VI / redemption points+Redemption Points
[+3 points] |
or
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/ VI / enrichment bonusEnrichment Bonus+
[+3 points] |
✓ MASTERY CHECK
National Research Council 2012. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. Washington, DC: The National Academies Press. https://doi.org/10.17226/13165
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
PS2.A, MS-PS2-2
Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object. (Stability and Change) [MS-PS2-2]
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
PS2.A, MS-PS2-2
Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object. (Stability and Change) [MS-PS2-2]