# Physics of Power Quiz

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Believe it or not, the laws of physics apply to towing! From Albert Einstein's famous energy equation to applications of torque and acceleration. Do you why torque is important to towing? Find out if you're a wiz at the physics of power!

# What is kinetic energy?

Kinetic energy is energy of motion. Objects that are moving, such as a roller coaster, have kinetic energy (KE). <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# The standard unit for force is name after what person?

To honor Newton's achievement, the standard unit of force in the SI system was named the newton. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# Weight is measured in what unit?

A kilogram is the amount of weight at which 1 N of force will accelerate at a rate of 1 m/s2. In English units, a slug is the amount of mass that 1 pound of force will accelerate at 1 ft/s2, and a pound mass is the amount of mass that 1 lb of force will accelerate at 32 feet/s2. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# The formula for calculating torque is:

Torque equals force multiplied by distance. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# The formula for calculating force is:

That is, the more force you apply to an object, the greater the rate of acceleration; and the more mass the object has, the lower the rate of acceleration. Newton's Second Law is usually summarized in equation form: Force=Mass x Acceleration. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# The International Systems of Units is also referred to as:

Throughout this article, we will refer to different types of units. In most of the world, the International System of Units (SI - from the French Le Système International d'Unités), also referred to as the metric system, is accepted as the standard set of units. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# What is energy?

Energy is a measure of how long we can sustain the output of power, or how much work we can do. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# What is torque?

Torque is a force that tends to rotate or turn things. You generate a torque any time you apply a force using a wrench. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# Weight is a term used to describe:

One type of force that everyone is familiar with is weight. This is the amount of force that the Earth exerts on you. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

# What is mass?

Generally, mass is defined as the measure of how much matter an object or body contains -- the total number of subatomic particles (electrons, protons and neutrons) in the object. <a href="http://auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/fpte.htm">How Force, Power, Torque and Energy Work</a>

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