Work and Energy

Front

The SI unit for energy is the ____.

Back

joule

Front

The amount by which a machine multiplies an effort force is called the ____.

Back

mechanical advantage

Front

CALCULATE KINETIC ENERGY: Mass is 560 g; Velocity is 4 m/s. What is the kinetic energy?

Back

4.48 J

Front

You can calculate gravitational potential energy by using the equation ____.

Back

GPE (J) = m (kg) × 9.8 m/s² × h (m)

Front

Energy stored in chemical bonds is called ____.

Back

chemical potential energy

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv²

Front

What is the formula for gravitational potential energy?

Back

GPE = mgh

Front

Define work in physics.

Back

Work is done when a force causes an object to move; calculated as Work = Force × Distance.

Front

What is the principle of conservation of energy?

Back

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

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in a system.