Equal and opposite forces are the focus of this Grade 6 Science worksheet on interacting objects, force pairs, and motion. Students investigate a key idea in physics: when two objects interact, each exerts a force of equal magnitude in the opposite direction on the other object. They also examine why these forces do not cancel when calculating the net force on a single object.

Who exerts each force?

The reading passage introduces force as a push or pull and uses familiar interactions, including a hand pressing against a wall, to show how force pairs work. Students learn to identify both objects in an interaction, describe the direction of each force, and determine which object receives each force. The explanation emphasizes that the paired forces occur simultaneously, even when an object appears stationary.

A central concept is the difference between an interaction force pair and the net force acting on one object. Because the forces in an interaction act on different objects, they must be considered separately when determining each object's net force. Students also explore how objects with unequal masses can exert equal forces while experiencing different accelerations.

Apply force concepts to real situations

• Multiple-choice questions: interpret interactions involving a hand and wall, a book and table, carts with different masses, students on wheeled platforms, and a swimmer pushing water backward.
• True-or-false statements: evaluate claims about simultaneous forces, stationary objects, equal interaction forces, and net-force calculations.
• Short-answer explanations: identify force directions, explain why interaction pairs do not cancel on one object, and connect mass to differences in acceleration.
• Visual and classification activities: complete a labeled diagram, categorize information, and respond to a short note task.

These activities ask students to distinguish forces acting on different objects from forces that can be combined to determine net force. They also practise interpreting observations and diagrams rather than assuming that an object must move whenever a force acts on it.

What the resource includes

• Printable Grade 6 Science worksheet with a reading passage and question-based practice.
• Separate PDF answer key for checking student responses.
• Student Notes lines at the bottom of the worksheet.
• Teacher Guide in the Answer Key PDF, with Learning Objectives, Teaching Tips, Discussion Questions, and Common Mistakes.

Use it during a forces and motion lesson

Use this interacting objects worksheet after introducing pushes, pulls, and force diagrams, or as guided practice within a forces, motion and energy unit. Students can first read the explanation, then work independently or discuss how each example illustrates a force pair. Their written explanations provide opportunities to check whether they can identify the receiving object and explain why equal interaction forces do not cancel in a net-force calculation for one object.

The resource is listed with the TEKS framework and focuses on the stated Grade 6 topic. Its separate answer key and teacher guidance help with response checking and classroom discussion, while the Student Notes lines give students space to record key ideas for later review.