Work and Energy

Front

In what units is kinetic energy measured?

Back

Joules (J)

Front

What is the approximate value of acceleration due to gravity used in potential energy calculations?

Back

9.81 m/s²

Front

What do work and energy primarily describe?

Back

The motion and changes in physical systems

Front

Which of the following is true about kinetic energy?

Back

It is the energy an object possesses due to its motion

Front

What does the conservation of energy principle state?

Back

Total energy in a closed system remains constant

Front

Define kinetic energy.

Back

The energy an object has due to its motion.

Front

Define potential energy.

Back

The energy stored in an object due to its position or configuration.

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for gravitational potential energy?

Back

PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the work-energy principle?

Back

The work done on an object is equal to the change in its kinetic energy.