8.8 (Term 1) Flashcards
Glossary Work Potential Energy Kinetic Energy Objectives A definition for work and how to calculate the work done on, or by, an object using a formula. Definitions for KE and PE, and how to calculate KE and GPE using a formula. How work equates to a change in KE or PE. The SI units for work and energy The Law of Conservation of Energy
What happens when you apply a force to an object?
The object moves in the direction of the force, and work is done to the object.
What is required for work to be done on an object?
For work to be done, the object must move in the direction of the force.
What is the formula for calculating work?
Work done = force × distance traveled in the direction of the force.
What is the SI unit for work?
The SI unit for work is Joules (J).
How can energy be transferred to an object?
Energy can be transferred to an object by doing work on it.
What happens when work is done on an object?
Doing work on an object can transfer energy from one form to another.
What does the Law of Conservation of Energy state?
Energy cannot be created or destroyed; it can only change form.
In what ways can energy be transferred or transformed?
Energy can be transferred from one object to another, transformed from one form to another (often with multiple transformations), and stored.
What is the formula for work done?
Work done = force × distance.
How much energy is transferred when 1 newton of force moves an object 1 meter?
The amount of energy transferred is 1 joule.
What is the SI unit for both work and energy?
The SI unit for both work and energy is the joule (J).
What is potential energy?
Potential energy is stored energy.
What is kinetic energy?
Kinetic energy is the energy of movement.
What is gravitational potential energy (PE)?
Gravitational PE is stored energy due to an object’s height from which it can fall.
What is chemical potential energy (PE)?
Chemical PE is stored energy in foods and fuels, released through chemical reactions.
