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Complete the Missing information

Complete the Missing information. PE = 1200 J KE = 0 J. PE = ______ J KE = 400 J. PE = 300 J KE = _______ J. PE = 0 J KE = ________ J. Energy Conversion Calculations. Section 15.2 Pages 457-458. Energy Conversion Calculations.

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Complete the Missing information

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  1. Complete the Missing information PE = 1200 J KE = 0 J PE = ______ J KE = 400 J PE = 300 J KE = _______ J PE = 0 J KE = ________ J

  2. Energy Conversion Calculations Section 15.2 Pages 457-458

  3. Energy Conversion Calculations • Mechanical energy is the total amount of kinetic and potential energy. • Because of the law of conservation of energy, total mechanical energy remains constant if there are no external forces. TMEbeginning = TMEend (KE + PE)beginning = (KE + PE)end Reminder: KE=1/2mv2 GPE=mgh

  4. Example #1 A diver with a mass of 70 kg stands motionless at the top of a 3.0 m high diving platform, Calculate his potential energy relative to the water surface while standing on the platform, and his speed when he enters to pool. (Assume the diver’s initial vertical speed after diving is zero.)

  5. Example #2 A 1.25 kg stone fell from a cliff and struck the ground at a speed of 29.4 m/s. How high was the stone before it fell?

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