🟩 Investigate Balanced and Unbalanced Forces - Day 18

Investigate Balanced and Unbalanced Forces - Day 18

Introduction

In your last exploration, you investigated how the mass of an object affects the amount of force needed to set it in motion and how much force would be needed to stop the object if it was already in motion.

When the objects were at rest, forces were balanced. When you applied a force (push) to the object, the forces became unbalanced and the object began to move.

Here are some discoveries you might have made:

  • Objects of differing masses will remain at rest as long as the forces are balanced.

  • Objects with greater masses require greater forces to set them in motion than objects with less mass.

  • When the force applied to an object increases, the speed of the object increases.

  • Once in motion, an object will remain in motion until an opposite force is applied. 

Today, we will focus on how friction affects the motion of objects. Let’s get started!

Watch This! Balanced and Unbalanced Forces

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Icon_Assignment.pngAssignment

Friction is the resistance of motion when one object rubs against another. Record what you observed in your journal. What objects did you test? In what ways did the motion and/or speed of the objects change when there was less friction? When there was more friction? How did the force required to move an object change with the force of friction changed? Based on your observations, what claim can you make about how the force of friction affects an object that is in motion? Use evidence from your observations to support your claim.

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