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POWERPOINT

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FORCE

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POWERPOINT

  1. 1. FORCE
  2. 2. What is Force? • A push or pull • Force has a size & direction • All motion is created by a force • All forces are exerted by one object on another **Motion does not have to occur
  3. 3. How is Force Measured? • Measured in Newtons (N) • The more Newtons, the greater the force • One tool to measure the force of gravity is the spring scale
  4. 4. Examples of Force • Fingers open a book • Push buttons on a keyboard • Gravity holds up a chair • 2 magnets coming together • The force that results from combining forces Visible Forces Invisible Forces
  5. 5. How to Measure Net Force SAME DIRECTION = ADD TOGETHER 20N + 25N = 45N This is the NET FORCE UNBALANCED FORCE because it produces MOTION Person # 1 Pushing with 20N Force Person # 2 Pushing with 25N Force
  6. 6. How to Measure Net Force OPPOSITE DIRECTIONS = SUBTRACT 25N - 10N = 15N This is the NET FORCE UNBALANCED FORCE because it produces MOTION Team # 1 Pulling with 25N Force Team # 2 Pulling with 10N Force
  7. 7. How to Measure Net Force OPPOSITE DIRECTIONS = SUBTRACT 37N - 37N = 0N This is the NET FORCE Wrestler # 1 Pushing with 37N Force Wrestler # 2 Pushing with 37N Force BALANCED FORCE because there is NO MOTION

FORCE

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