Unit 5: Work & Energy

Front

What must be true for work to be done?

Back

Force acts in the same direction as the distance traveled.

Front

True or False: Energy cannot be created or destroyed.

Back

True

Front

What is nuclear energy?

Back

Energy in the nucleus of an atom.

Front

What type of energy represents the sum of kinetic energy (KE) and potential energy (PE) that a moving object has?

Back

Total mechanical energy.

Front

What type of energy transformation occurs when a flashlight shines?

Back

Chemical → Electrical → Light.

Front

Define work in physics.

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.

Front

What is potential energy?

Back

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

Front

What is the formula for calculating kinetic energy?

Back

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

Front

What is the formula for calculating potential energy?

Back

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