Jeopardy Game

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(No Transcript)
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Lets Play! Please listen carefully and think
before answering. Good Luck!!
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(No Transcript)
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Work
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Potential energy
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Kinetic energy
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Energy graphs
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Conservation of energy
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Mystery
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Work
Potential Energy
Energy Graphs
Energy Cons.
Mystery
Kinetic Energy
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This is the unit for work.
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What is Joule (J)?
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Work is done when this happens.
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What is when a force moves a distance?
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This is the formula for work when a force is
applied at an angle.
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What is W Fdcos??
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A 5-kg textbook is held over a students head for
5 minutes. This is the work done.
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What is zero?
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As an apple falls from a tree, gravity does
______ work and air resistance does _______ work.
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As an apple falls from a tree, gravity does
positive work and air resistance does negative
work.
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The x in the spring potential energy equation
represents this physically.
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What is the distance the spring is stretched?
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These are the names and formulas for the two
types of stored energy.
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What are Elastic ½kx2 Gravitational mgh
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A spring, with constant 200 N/m, is stretched
0.1m. This is the energy stored in the spring.
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What is PE 1/2 kx2 (0.5)(200N/m)(0.1)2
1 Joule
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A 5-kg weight is lifted 4 meters in the air. This
is its potential energy.
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What is 200 J?
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A spring, with constant 100 N/m, has 50 Joules
of energy. What distance is it being stretched?
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What is 1 meter?
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Kinetic energy is the energy of _______.
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What is motion?
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(True/False) Kinetic energy can be negative.
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What is false?
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A 10kg car doubles its speed from 10m/s to 20
m/s. Its KE changes by this factor.
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What is quadruples?
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• A skydiver releases a parachute and falls at
  terminal velocity. Her Kinetic energy
• Increases
• Decreases
• Remains the same
• Not enough information

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What is c remains the same?
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A 4-kg dog has a momentum of 40 kg m/s. This is
the dogs kinetic energy.
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What is 200 J?
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The kinetic energy is a maximum at this/these
point(s).
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What is point c?
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Below is the kinetic energy graph of an object.
Draw its potential energy graph.
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What is
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Daily Double!
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Below is a potential energy graph. If total
mechanical energy is conserved, this is the
kinetic energy graph.
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(No Transcript)
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Draw the PE, KE, and tot. E graph
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What is
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This is the KE graph
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What is
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This is the total mechanical energy.
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What is (all the PE) (all the KE)?
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A 1-kg apple has 100J of potential energy hanging
in a tree. If it falls, it has this much kinetic
energy just before it hits the ground.
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What is 100 Joules?
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An apple falls from a 5m tree. How fast is it
moving just before it hits the ground?
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What is 10m/s?
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If a baseball is thrown straight up with a speed
of 20 m/s, this is the maximum height it will
reach.
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What is 20 m?
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A spring with spring constant 9.0 N/m is
compressed 0.1 meters. This is how fast a 1-kg
ball will travel if it is pushed by the spring.
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What is 0.3 m/s?
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The units of velocity are this.
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What are m/s?
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A net force of 45 N is applied to a 5.0-kg book
bag. This is the bags acceleration.
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What is 9 m/s2?
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A certain spring is stretched a distance of 1m.
If its total force is 10N, what is the spring
constant?
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What is 10 N/m?
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This is the weight of a 10-kg box on earth.
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What is 98.1 N (or 100N)?
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Daily Double!
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Which pair of vectors, A B, would combine to
produce the resultant vector R?
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What is
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Final Jeopardy
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Energy Conservation
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A 5 kg mass compressed against a spring has 105
Joules of stored energy. As it moves from A to C
it loses 5 Joules of energy. How high does it
roll?
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What is 2 meters high?