1. Classical mechanics
   Biomedicine
2. Psychology
   Psychiatry

Classical mechanics may also be called Newtonian mechanics. Isaac Newton did a lot of work with objects and movement.

1. Biology
   Planetariums
2. Force
   Medicine

Force is a factor in physics. It can change how an object behaves.

1. Umami
   Friction
2. Weather
   Music

Friction is a factor in physics. It describes how objects move against one another.

1. Albert Einstein
   Queen Elizabeth
2. Brad Pitt
   George Washington

Albert Einstein was one of the fathers of modern physics. He was born in the German Empire.

1. Psychology
   Psychiatry
2. Social interaction
   Applied physics

Applied physics is the development of something for practical use. There's a lot of engineering involved.

1. Psychology
   Math
2. Sociology
   Medicine

Physics uses a lot of math. Many physics equations are very complex.

1. Move
   Think
2. See
   Taste

Classical mechanics assumes that objects are under pressure from certain forces. Isaac Newton studied classical mechanics.

1. Solids
   Liquids
2. Gases
   Psychology

The study of solids, liquids and gases are all subsets of classical mechanics. Psychology is not involved in the study of physics.

1. Accelerating
   Decelerating
2. Flying
   Motionless

An object that is picking up speed is accelerating. Physics may study how objects accelerate during a set period of time.

1. Momentum
   Psychology
2. Psychiatry
   Personal behavior

Momentum is a factor in physics. It is a combination of mass and velocity.

1. Sigmund Freud
   Isaac Newton
2. Oprah Winfrey
   Cal Ripken

Isaac Newton helped develop classical mechanics. He was born in 1643 (or 1642, by the old Julien calendar).

1. Accelerating
   Decelerating
2. Flying
   Motionless

An object that is slowing down is decelerating. Physics may study how objects decelerate during a set period of time.

1. Richard Phillips Feynman
   Bob Barker
2. George Michael
   Sigmund Freud

Feynman was a theoretical physicist. He studied quantum mechanics.

1. Planets
   Objects
2. Baseballs
   Taste

Classical mechanics studies objects of all sizes and shapes. Taste is not about movement.

1. George Washington
   Isaac Newton
2. King Edward V
   John Marbury

Some experts insist the apple story is a myth. Some of Newton's contemporaries insisted the story was true.

1. Heisenberg Uncertainty
   Psychology principle
2. Popular principle
   Massive uncertainty

Heisenberg uncertainty may also be called Heisenberg's indeterminacy principle. It is involved in the study of quantum mechanics.

1. Color
   Taste
2. Force
   Sound

Forces act on an object to change how it moves. An object without force doesn't move.

1. Matter and energy
   Dinosaurs
2. History
   Nationalities

Physics is the study of how matter and energy interact. There are certain laws that govern these interactions.

1. Color
   Taste
2. Sound
   Mass

Mass is a measurement of an object. Objects vary in mass.

1. Newtonian mechanics
   Lagrangian mechanics
2. Hamiltonian mechanics
   Psychological mechanics

Newtonian mechanics, Lagrangian mechanics and Hamiltonian mechanics are all forms of classical mechanics.

1. 1687
   1925
2. 2001
   1009

Isaac Newton's "Principia" was first published in 1687. The full title of the book, in English, is Mathematical Principles of Natural Philosophy. He wrote in Latin.

1. Isaacs
   Newtons
2. Figs
   Cookies

Force is measured in units called Newtons. Yup, they're named after Isaac Newton.

1. The first law of motion
   The second law of motion
2. The third law of motion
   The fourth law of motion

For every action, there is an equal and opposite reaction - as in, when you push against the ground, it pushes back, so you can jump. This third law was developed by Isaac Newton.

1. Fear
   Factor
2. Fancy
   Force

The letter "F" stands for force. The full equation is: force equals mass times acceleration.

1. Mass
   Distance
2. Color
   Object type

Gravity increases along with mass. Distance decreases gravity.

1. Simple movement
   Complex movement
2. High/low movement
   Weird movement

Moving in a squiggly line describes a complex movement. Pitching a baseball is a complex movement because the trajectory curves.

1. The early 20th century
   The late 800s
2. The Greek Revival
   The future

Isaac Newton helped lead the way for classical mechanics. It wasn't until the 20th century that it was given a name.

1. Benjamin Franklin
   Abraham Lincoln
2. Isaac Newton
   Elizabeth Taylor

It took Newton twenty years to fully conceive his theory. He began studying the theory in the late 1600s.

1. Mass
   Heat
2. Chemistry
   Quantum

The plural of quantum is quanta. It describes a physical property.

1. The first law of motion
   The second law of motion
2. The third law of motion
   The fourth law of motion

"An object in motion will stay in motion" describes the first law of motion. This law was developed by Isaac Newton.

1. Scalar
   Color
2. Equation
   Fire

Energy, like mass, is a scalar quantity. It can be represented by a real number.

1. The first law of motion
   The second law of motion
2. The third law of motion
   The fourth law of motion

Force is equal to mass times acceleration - that's the second law of motion. This law was developed by Isaac Newton.

1. Simple movement
   Complex movement
2. Straight movement
   Flying movement

Moving in a straight line is a simple movement. Simple movements may be fast or slow.

1. Algebra
   Addition
2. Subtraction
   Calculus

Both Newton and Leibniz are credited with inventing modern calculus. Calculus studies continuous change.

1. Instantaneous measurement
   Constant measurement
2. Average velocity
   Average measurement

Instantaneous measurement measures something at that exact moment. An average would include more than one point in time.