Warm up: 6.8A Potential and Kinetic Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. For example, an apple hanging from a tree has potential energy because of its height.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. The faster an object moves, the more kinetic energy it has.

Front

How does potential energy change when an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, converting potential energy into kinetic energy.

Front

Which has more kinetic energy: a moving truck or a moving bicycle at the same speed?

Back

The moving truck has more kinetic energy because it has a greater mass than the bicycle.

Front

What happens to the potential energy of an object when it is lifted higher?

Back

The potential energy of an object increases as it is lifted higher because it is further from the ground.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to mass; if the mass of an object increases, its kinetic energy increases as well.

Front

What is an example of potential energy being converted to kinetic energy?

Back

An example is a roller coaster at the top of a hill; as it descends, its potential energy converts to kinetic energy.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is an example of an object with high potential energy?

Back

A book on a high shelf has high potential energy due to its height above the ground.

Front

What is an example of kinetic energy?

Back

A soccer ball being kicked down the field is an example of kinetic energy.