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Forces Strike Back!

Discover the impact of friction on motion and the relationship between kinetic and potential energy. Learn about mass vs. weight distinctions in different environments like space, the Moon, and Earth.

patriciaharrell
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Forces Strike Back!

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  1. Forces Strike Back!

  2. Friction • Friction – a force that opposes motion between 2 surfaces that are touching. • Always acts in a direction opposite to the motion of the object. • The greater the friction, the faster an object will lose speed. FRICTION

  3. Energy of Motion • Kinetic Energy – Energy in a moving object. • More speed or more mass = more kinetic energy • Potential Energy – Energy stored in an object because of position • High diver on the board – lots of potential energy • Becomes kinetic energy when he dives!

  4. Mass vs. Weight • Mass = amount of matter in an object • Weight = force of gravity on an object • NOT THE SAME THING!!! • Weight = gravity x mass In Space Weight = 0 lbs Mass = 46.36 kg On the Moon Weight = 20 lbs Mass = 46.36 kg On Earth Weight = 120 lbs Mass = 46.36 kg

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