period 4 - gpe & ke equations
TRANSCRIPT
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Question of the Day
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Question of the Day
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Today’s Objective:• You will be able to make calculations involving
gravitational potential energy and kinetic energy.
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Gravitational Energy
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Gravitational Energy
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Gravitational EnergyGay Wilkinson uses gunpowder to launch anvils up to 100 ft (30 m) into the air. Anvils weigh 100 lbs (the equivalent of 45 kg on Earth. How much energy does it take?
https://www.youtube.com/watch?v=MLejkyXbJlc
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Kinetic Energy
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Kinetic Energy
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Kinetic EnergyHow fast does a 50 gram arrow need to travel to have 40 joules of kinetic energy?
https://www.youtube.com/watch?v=1o9RGnujlkI
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Elastic Energy
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Elastic Energy
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Elastic EnergyA bungee cord stretches 25 meters and has a spring constant of 140 N/m. How much energy is stored in the bungee?
https://www.youtube.com/watch?v=mKIWQaW7z7Q
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Conservation of Energy
https://www.youtube.com/watch?v=mvA7AZEyciM
How much energy did Renaud Lavillenie have at the highest point? (Assume his center of mass reached the highest point.)
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Conservation of Energy
https://www.youtube.com/watch?v=mvA7AZEyciM
How fast did Renaud Lavillenie have to run to reach that height? (Assume no internal energy and the pole is weightless.)
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Conservation of EnergyHow fast did Robbie Madison have to drive to reach the roof?
https://www.youtube.com/watch?v=MLejkyXbJlc
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Conservation of Energy
https://www.youtube.com/watch?v=MLejkyXbJlc
How fast was Robbie Madison moving when he landed?
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Additional Practice:• Read p. 87 – 90• # 6.15 – 6.21