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Force and Motion. Objective. - PowerPoint PPT Presentation
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Objective
P.FM.E.3- A force is either a push or a pull. The motion of objects can be changed by forces. The size of the change is related to the size of the force. The change is also related to the mass of the object on which the force is being exerted. When an object does not move in response to a force, it is because the environment is applying another force.
Correct!
The motor! The bus cannot move on it’s own. It needs something to start the motion- The motor is the force needed to start the bus!
•Click to learn about force!
What is force?
• Force is a push or pull needed to start an object moving.
Think about a door. The door will stay in the same place unless something like your hand or the wind pushes or pulls it closed.
Correct!
No, an ant isn’t strong enough to move a brick. For an object to move, the amount of force has to be strong enough to move it.
•Continue to learn more about motion!
Describing Motion• Now that we know what
motion is and force causes motion, let’s talk about how to describe it!
You can describe motion with 3 types of words:
1.Type of motion
2.Speed
3.Direction
Type of Motion Words
These words describe what kind of motion it is:
• running
• jumping
• skiing
• climbing
Question: How would you describe the type of motion this rabbit is
doing?
1.Hopping
2.Rolling
3.Swimming
Review
Motion occurs when an object moves from one place to another.
For motion to occur, there has to be a force on the object.
A force is a push or pull.
The force has to be stronger than the object.