Calculating Net Force
Authored by Elizabeth Gonzalez
Science
8th Grade
NGSS covered
Used 1K+ times
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This quiz focuses on the fundamental physics concept of net force, specifically targeting 8th grade physical science students. The questions systematically build understanding of how multiple forces acting on an object combine to produce a single resultant force. Students must master vector addition and subtraction, recognizing that forces in the same direction are added together while opposing forces are subtracted to find the net force. The core concepts include understanding force as a push or pull measured in Newtons, distinguishing between balanced forces (net force equals zero, object remains at rest or constant velocity) and unbalanced forces (non-zero net force causes acceleration), and applying directional analysis to predict object movement. Students need strong computational skills to perform calculations with forces ranging from simple whole numbers to decimals, while simultaneously considering both magnitude and direction in their solutions. Created by Elizabeth Gonzalez, a Science teacher in US who teaches grade 8. This comprehensive assessment serves multiple instructional purposes throughout the force and motion unit, from initial concept introduction through summative evaluation. The quiz works excellently as a formative assessment tool, allowing teachers to identify misconceptions about force calculations and directional analysis before they become entrenched. It functions effectively as homework practice, giving students repeated opportunities to apply net force calculations in varied contexts from tug-of-war scenarios to abstract force diagrams. Teachers can use individual questions as warm-up problems or exit tickets, while the complete quiz serves as solid review material before unit tests. This assessment directly supports NGSS standard MS-PS2-2, which requires students to plan investigations of balanced and unbalanced forces, and aligns with Common Core mathematical practices involving problem-solving and mathematical reasoning in scientific contexts.
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the net force of the object in the image shown.
Tags
CCSS.HSN.VM.A.3
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Is this a balanced or unbalance force?
Tags
NGSS.MS-PS2-2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which direction will the object move?
Tags
CCSS.HSN-VM.B.4A
CCSS.HSN-VM.B.4B
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the net force of the object.
Tags
CCSS.HSN.VM.A.3
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Is this a balanced or unbalanced force?
Tags
CCSS.7.NS.A.1A
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?
Tags
CCSS.HSN.VM.A.3
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Student A is pushing at 63 newtons, and student B is pushing at 56 newtons. What is the net force (calculation).
119 N Right
7
7 N Right
119
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
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