1. Kinetic Energy

2. Define Kinetic Energy in your own words. Define Speed in your own words

3. Research  F ind the definition of Kinetic Energy  Find the equation for Kinetic Energy  2 examples (a bowling ball rolling down a hill)  2 problems (if a 4 kg ball rolled down a hil at 36 mps, how much kinetic energy does it have?)  What common symbols might we see for Kinetic Energy  What are the SI units used for Kinetic Energy 15 minutes

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5. Research  Define Mass  What equipment is used to measure mass  Define Speed  Find the equation for speed with 2 to 3 examples  Define Velocity  Find the equation for velocity with 2 to 3 examples

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7. Answers  KE = 0.5 m v 2  1. Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s.  Answer:  KE = 0.5*m*v 2 KE = (0.5) * (625 kg) * (18.3 m/s) 2  KE = 1.05 x10 5 Joules or  Missy Water, the former platform diver for the Ringling Brother's Circus, had a kinetic energy of 12 000 J just prior to hitting the bucket of water. If Missy's mass is 40 kg, then what is her speed?  Answer  KE = 0.5*m*v 2 12 000 J = (0.5) * (40 kg) * v 2  300 J = (0.5) * v 2  600 J = v 2  v = 24.5 m/s

8. Answers  Velocity = Distance/Time

9. Exit Note  How does Kinetic Energy Change when mass and/or speed is changed?