Ages 12–13🔬 ScienceBeing planted

Investigating Forces

Plan and carry out investigations into forces, including measuring force with a newton meter, investigating Hooke's Law, and collecting and interpreting motion data to test Newton's laws

A first look

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Question 1 of 3

A student wants to show that an electric field exists between a charged plastic rod and a small piece of paper, even though the two objects never touch. Which part of the student’s experimental design provides the strongest evidence that a force is acting at a distance?

Question 2 of 3

A 5‑kg block is pulled across a frictionless horizontal surface and accelerates at 2 m/s². What is the magnitude of the net force acting on the block?

Question 3 of 3

Two forces act on the box as shown by the arrows. What is the net (overall) force on the box?

Two forces on a boxA box with a force of 8 units pulling left and a force of 7 units pulling right.box87forces (in units) acting on the box
A box with a force of 8 units pulling left and a force of 7 units pulling right.

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Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.