Physics Work & Energy

Front

What type of energy is stored in batteries or food?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like batteries and food.

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.

Front

What type of energy does an object at rest on a shelf have?

Back

Potential energy is the energy stored in an object due to its position or state.

Front

What happens when a weight lifter lifts a barbell?

Back

The weight lifter does work by lifting the barbells from the floor to above his head.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or condition, such as height above the ground.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done on an object, energy is transferred to that object.

Front

What is mechanical energy?

Back

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

Front

What is the formula for calculating work?

Back

Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J), which is equivalent to one Newton meter.