Physics Work & Energy

Front

What happens to kinetic energy when rolling down a hill?

Back

Kinetic energy increases.

Front

What type of energy is stored in batteries or food?

Back

Chemical energy.

Front

Did the weight lifter do work by lifting the barbells from the floor to above his head?

Back

Yes, the weight lifter did work.

Front

At which points is potential energy greatest in a swinging pendulum?

Back

At points 1 and 5.

Front

What happens to kinetic energy as mass increases?

Back

Kinetic energy increases.

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 the formula for calculating kinetic energy?

Back

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

Front

What is potential energy?

Back

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

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential and kinetic energy in an object.