Energy can only be converted from one form to another; it cannot be destroyed or created.
What is The Law of Conservation of Energy?
300
Kind of energy that increases as an object moves faster and faster.
What is kinetic energy?
300
What is the energy that is produced by friction?
What is Heat?
300
Amount of work done when 4 Newtons of force is applied to a 400 kilogram object
What is no work?
300
A support on which a lever can pivot.
What is a fulcrum?
400
This type of energy source cannot be replaced within a lifetime.
What is nonrenewable?
400
What is the kinetic energy of a 15 kg boulder resting at the top of a 12 m cliff?
0 J (Not moving = no kinetic energy)
400
The work done on an object is this type of quantity because technically it has magnitude but not a specific direction.
What is a scalar quantity?
400
Amount of work done in 1 second
What is power?
400
A ramp is an example of this kind of simple machine.
What is an inclined plane?
500
These are two examples of nonmechanical energy.
Chemical, Radiant, Electrical, thermal, nuclear etc.
500
When a ball is thrown directly upward, which of the following is true?
A. Its kinetic energy is mostly converted to potential energy.
B. Its potential energy is mostly converted to kinetic energy.
C. Its kinetic energy is mostly converted to heat.
A. Its kinetic energy is mostly converted to potential energy.
500
Like all objects, humans need energy to cause change. What unit do humans most often use to describe their own changes in energy?
The Calorie (= 4,187 Joules)
500
One unit for work is a Joule. A Joule is equivalent to a _______________ ?
What is Newton-meter [N-m]?
500
The six kinds of simple machines
What are lever, pulley, screw, wedge, inclined plane, wheel & axle?