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Showing Forces 1

In this worksheet, students will be helped to look at forces visually, using visual cues to encourage understanding of the size and direction of different forces and how a particular object behaves in relation to those forces.

'Showing Forces 1' worksheet

Key stage:  KS 3

Curriculum topic:   Physics: Motion and Forces

Curriculum subtopic:   Motion and Forces

Difficulty level:  

Worksheet Overview

 One way in which forces can be represented is by using labelled arrows; for example here's someone swimming:

 

 Swimmer showing forces

 

As you can see, he propels himself through the water using his arms and legs, pushing the water out of the way, which creates RESISTANCE to the forward motion in the form of friction.

 

These forces are represented by a THRUST arrow as the swimmer pushes himself forward and then a FRICTION arrow acting in the opposite direction, pushing against the swimmer.

 

Notice that the THRUST arrow is bigger than the FRICTION arrow, meaning that the swimmer must be speeding up as he is overcoming the water resistance acting against him. If the two arrows were the same size, the forces would be equal, so he would be moving at a steady speed.

 

OK, use this idea in the questions on this worksheet.

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