"Force" Motion and Force PPT Courseware 3

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"Force" Motion and Force PPT Courseware 3

(1) What is force? Force is the action of an object on an object

Please give examples of powerful existence:

Man pushing cart; crane lifting container upwards

A person lifts a bucket; a car trailer,

Horse-drawn carts, bulldozers,

Analyze the above example: Who used force? Who was affected?

How many objects are there when a force exists (or appears)?

When force exists, there is always an object acting on another object.

(2) The effects of forces between objects are mutual

The effects of forces between objects are mutual. When an object exerts a force on another object, it also receives the force exerted by the latter on it.

(3) Effect of force

1. Force can change the shape of an object.

Student Activities:

① Stretch the spring by hand; ② Bend the spring by hand

What does it mean that the spring has become longer, bent, and the steel has become flat?

Give examples of situations where force can change the shape of an object.

2. Force can change the motion state of an object.

Read the textbook and answer: How do each picture describe the movement of football?

Give examples where force can change the state of motion of an object.

(4) Practice

1. Stretch the spring by hand, and the spring is stressed. The effect of the force is ____________.

2. Push the table hard and the table will move. The effect of force is ______________.

3. When the glass falls on the ground, the cup gives a force to the ground and the cup will break. The reason is ________.

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For more information about the "Movement and Force" PPT courseware, please click the "Movement and Force ppt Force ppt" tab.

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Update Time: 2024-09-11

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume 2 industry PPT template

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