Kinetic Energy
Potential Energy
Energy Types
Conservation of Energy
Relationships
100
How much kinetic energy is produced when a 48kg todler runs from his mom at a velocity of 12m/s?
3,456 J
100
How much potential energy is produced when a 2,000kg pony stands at the top of a hill 30m high?
588,000 J
100
Where does all energy find its source?
The Sun
100
What is the law of conservation of energy?
Energy is neither created nor destroyed; it is only transferred or transformed.
100
In what ways are Kinetic and Potential Energy alike?
KE and PE energy both depend on mass, both forms of energy and have the units of (joules, J).
200
How much kinetic energy is produced when a 10,000kg truckmoves with a velocity of 40m/s?
8,000,000 J
200
How much potential energy is available when a 20kg object is resting on a 1.5m high desk?
294 J
200
Define potential energy
Potential energy is energy that is stored.
200
If a ball is thrown in the air, where does it have the most potential energy and why?
The ball will have th emost potential energy when it reaches its maximum height, as height increases so does PE.
200
In what ways are PE and KE different?
KE depends on V. PE depends on gravity and height.
300
How much kinetic energy is produced when a 14kg box is drug across a driveway with a velocity of 2m/s?
28 J
300
How much potential energy is available when a 55kg object is resting on a 2.5m high desk?
1,347.5 J
300
Define kintetic energy
Kinetic energy is the energy of motion.
300
If a ball is thrown in the air, where does it have the most kinetic energy and why?
The ball has the most kinetic energy as it reaches the ground because this is where it has the highest velocity.
300
As kinetic energy increases what happens to potential energy?
As kinetic energy increases; potential energy decreases.
400
How much kinetic energy is produced when a 45kg dog runs over a road with a velocity of 7m/s?
1,102.5 J
400
How much potential energy is available when a 8kg book is sittong on a 6m high shelf?
470.4 J
400
A ball sitting on a shelf 5m high has what kind of energy?
Potential
400
Give an example of the law of conservation of energy.
Gas is put into the car as cemical potential energy; the engine transfers the PE to KE as the car moves.
400
As potential energy increases what happens to kinetic energy?
As potential energy increases; kinetic energy decreases.
500
How much kinetic energy is produced when a 75,000kg train moves with a velocity of 30m/s? if the velocity is doubled?
33,750,000 J and 135,000,000 J
500
How much potential energy is available when a 50kg dog is sleeping on the floor?
0 J
500
A horse running across a field has what kind of energy?
Kinetic
500
Explain how the energy you use throughout the day is really solar energy.
Energy from the sun causes plants to grow, animals and people eat plants, people eat animals thus our energy comes from the sun. Energy from the sun causes plants to grow, plants become fossil fuels, people use fossil fuels for power, gas, etc. Thus our energy comes from the sun.
500
Describe what happens to kinetic energy when velocity doubles?
Velocity increases by 4 times the amount because in the KE equation velocity is squared.
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