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"The Movement of Cars" Toys Around You PPT Courseware
How to make the car move?
Pushing and pulling both create forces, and pushing and pulling both cause objects to move. Push and pull forces also have magnitude and direction.
A toy car without any power device, what are the ways to make it move on the table? Try these methods to see if they work.
Why can we use these methods to make the car move? What changes can they make to the movement of the car?
Pushing or pulling can produce force, and both pushing and pulling forces will make the car move. Force has direction and magnitude.
They can make the car move forward, backward, and turn, and make the car move faster or slower.
What other methods can be used to make the car move?
The forces that make the car move: gravity (incline), elastic force, reaction force and recoil force
What does the movement of the car have to do with?
Some factors that affect the movement of the car: power, mass of the car and friction
Hypothesis: The larger the load capacity, the slower the car moves; the smaller the load capacity, the faster the car moves.
What remains unchanged: the road surface, the distance, the magnitude of the pulling force...
What needs to be changed: the size of the load capacity
Experimental requirements
1. Tie one end of the line to the trolley and the other end to hook the code.
2. During the experiment, it should be noted that the distance, road surface conditions, and pulling force remain unchanged.
3. At the end of the distance, take a shield to prevent the car from falling and protect our experimental equipment.
4. Use the hook code to replace the pulling force.
5. Pay attention to the division of labor in the group. One person protects the safety of the car, one person records, one person times the time, and one person changes the load capacity (hook code).
question:
What factors are related to the speed of the car's movement?
Hypothesis: The movement of the car is related to the magnitude of the pulling force
What needs to be changed: the size of the pulling force
What remains unchanged: road surface, distance, weight of the car, slope...
in conclusion:
When the load capacity, distance and other conditions remain unchanged, the greater the pulling force, the faster the trolley moves; the smaller the pulling force, the slower the trolley moves.
think
If we study the speed of the car's movement, is it related to the road surface?
What conditions should be kept constant? What conditions should be changed?
What factors are related to the speed of the car's movement?
related to road conditions
Related to load capacity
related to weather
related to sight
Engine (pulling) related...
Experimental results
To change the (stationary or) motion state of an object, a powerful force must be exerted. The size and direction of the force affect the motion state of the object. The mass of an object (expressed in this unit using load) also affects motion.
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For more information about the PPT courseware "The Car's Movement with Toys Around You", please click on the "The Car's Movement with Toys Around You" ppt tag.
"Motion of Cars" PPT courseware download:
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"Motion of Cars" PPT download:
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