Energy
What is work?
Motion under the influence of gravitational pull only.
What is freewill?
The law that explains acceleration of an object as being directly proportional to the net force acting upon it and inversely proportional to the mass of the object.
What is Newton's second law of Motion?
During the 17th century, this scientist described the laws of motion.
Who is Sir Isaac Newton
A boxer who rolls with a punch thrown at his face extends the time the punch impacts, but diminishes the ___.
What is force?
This is the unit of work.
What is a joule?
The resistive force that opposes motion or attempted motion of an object either past another object with which it has contact or through a fluid.
What is friction?
A cannonball fired from a cannon and the resulting recoil of the cannon demonstrate this law of motion.
What is Newton's third law of motion?
This scientist discredited Aristotle's assertion that objects fall at different rates because of their weight by dropping objects from the Leaning Tower of Pisa.
Who was Galileo?
"Energy cannot be created or destroyed" is the main tenet of this law.
A stretched rubber-band is an example of this type of energy.
An object's speed and direction.
What is velocity?
The two units needed to describe speed.
What is distance and time?
Who was Copernicus?
The equation force times distance represents this.
What is work?
When a bow string is released the potential energy is converted to ____ energy of the arrow.
What is kinetic?
The product of the mass of an object and its velocity.
If the mass of an object increases, then ___ is increased to maintain a given acceleration.
What is force?
This Greek scientist and philosopher defined the natural motion and violent motion of objects.
Who was Aristotle?
___ tells us how fast work is done.
What is power?
An falling apple's potential energy is fully converted to kinetic energy at this moment.
What is the moment before impact with the ground?
The property of a system that enables it to do work.
What is energy?
A sky diver falling through the air decreases her ___ because air resistance increases with falling speed.
What is acceleration?
This Greek mathematician invented a method for finding prime numbers and was the first to accurately calculate the size of the Earth.
Who was Eratosthenes?
This describes the change in kinetic energy.
What is the work-energy theorem?