Unit (IV) Work and Energy - Flashcard #1

Front

What is the sum of Gravitational Potential Energy (GPE) and Kinetic Energy (KE) in a system called?

Back

Mechanical Energy

Front

What is a device that makes work easier?

Back

Machine

Front

True or false: You do work only when you exert a force on an object and move it.

Back

True

Front

How do you calculate Kinetic Energy (KE)?

Back

KE = 0.5 * mass * velocity^2

Front

What is the unit of work and energy?

Back

Joule (J)

Front

If a 500 kg car is rolling down a hill at 10 m/s, how much Kinetic Energy does it have?

Back

25,000 Joules

Front

What is the formula for calculating work done?

Back

Work = Force x Distance

Front

If 45J of work were done on an object that moved 5M, how much force was applied?

Back

9N

Front

What is the relationship between work, energy, and power?

Back

Power is the rate at which work is done or energy is transferred.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.