1. Unit 11 Lesson 1 What Is Motion?
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2. How can you tell something is moving?
Unit 11 Lesson 1 What Is Motion?
How can you tell something is moving?
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3. Unit 11 Lesson 1 What Is Motion?
Twisting and Turning
Position is the location of an object in relation to a nearby object or place. The second object or place is called a reference point.
An object that moves has motion. Motion is a change in position.
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4. Twisting and Turning Unit 11 Lesson 1 What Is Motion? 4
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5. Twisting and Turning Unit 11 Lesson 1 What Is Motion? 5
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6. Where Is It? Unit 11 Lesson 1 What Is Motion? 6
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7. Unit 11 Lesson 1 What Is Motion?
Fast or Slow?
Speed tells you how the position of an object changes during a certain amount of time.
An example of speed is 2 meters traveled every second, or 2 m/sec.
To find an object’s speed, divide the distance the object travels by the time it took to travel that distance.
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8. Fast or Slow? Unit 11 Lesson 1 What Is Motion? 8
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9. Unit 11 Lesson 1 What Is Motion?
Fast or Slow?
Velocity is the speed of an object in a particular direction.
An example of velocity is 2 m/sec, east.
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10. Fast or Slow? Unit 11 Lesson 1 What Is Motion? 10
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11. Unit 11 Lesson 1 What Is Motion?
Pushes and Pulls
A push or pull is a force. A force can change an object’s speed or direction.
Gravity is a force that pulls objects down to Earth.
Friction is a force that acts directly against the direction of motion. Friction can slow things down or make them stop.
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12. Pushes and Pulls Unit 11 Lesson 1 What Is Motion? 12
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13. Pushes and Pulls Unit 11 Lesson 1 What Is Motion? 13
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14. Changing It Up Acceleration is any change in velocity.
Unit 11 Lesson 1 What Is Motion?
Changing It Up
Acceleration is any change in velocity.
An object accelerates if it speeds up, slows down, or changes direction.
If a force pushing against an object in one direction is greater than a force pushing in the opposite direction, the object will accelerate.
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15. Changing It Up Unit 11 Lesson 1 What Is Motion? 15
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16. Changing It Up Unit 11 Lesson 1 What Is Motion? 16
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17. Unit 11 Lesson 1 What Is Motion?
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