Kinetic Energy
Energy is the ability to _________
Cause change
The only type of potential energy there is is stored energy due to the distance something is from the surface of the earth. True or flase.
False
True or false. An object can have both potential and kinetic energy.
True
What is kinetic energy?
Energy due to motion.
Energy is measured in _____
Joules
What are the two factors that kinetic energy depends on?
How can you increase the elastic potential energy something has.
stretch or compress it more
stay the same
Stored energy due to the interaction of objects in the gravitational field.
Gravitational Potential Energy
Work is not done if __________
the force is not strong enough to make the object move.
What does kinetic energy do as the objects mass increases?
What does kinetic energy do as the objects speed increases?
The kinetic energy increases.
What two ways can you increase an objects gravitational potential energy?
increase its mass and increase the distance between the object and the surface of the earth
When is work done on an object?
When a force is applied to the object and it moves.
Even though energy is always transferring, energy is not created and energy is not destroyed.
Law of Conservation of Energy
A women hits a golf ball and it lands on the green. Is this an example of energy transfer or transformation?
Transfer
If the speed of an object increases by 4 the kinetic energy increases by ____
16
All objects can have elastic potential energy. True or false.
Flase
What is the difference between energy transfer and energy transformation?
energy transfer is when energy moves from one location to another, energy transformation is when energy changes from one form to another.
The sum of the potential energy and kinetic energy in a system.
Mechanical energy
that energy is transferred, but it is not created or destroyed.
An object has a mass of 21 kg and is traveling 6 m/s. What is its kinetic energy?
378 Joules
Name one other type of potential energy besides gravitational and elastic.
chemical, electrical, or nuclear
What are three signs of a transfer of energy?
motion, sound, temperature change
The transfer of energy to an object by a force that make sthe object move in the direction of the force.
Work
Explain how the law of conservation of energy worked in your roller coaster lab.
The kinetic energy of the marble was transformed into a different type of energy (thermal) which is why the marble stopped rolling.