Energy, Work, and Power

Front

What type of energy do plants convert sunlight into?

Back

Chemical energy.

Front

What energy conversion occurs in wind turbines?

Back

Kinetic energy is converted to electric energy.

Front

How much kinetic energy does a 5 kg ball have just before hitting the ground from a height of 2 m?

Back

100 Joules.

Front

What kind of energy is present in a person climbing a ladder?

Back

Both potential and kinetic energy.

Front

How much time is needed to produce 720 Joules of work with 90 Watts of power?

Back

8 seconds.

Front

Define energy.

Back

The capacity to do work or produce change.

Front

What is work in physics?

Back

Work is done when a force causes displacement; calculated as Work = Force x Distance.

Front

Define power in the context of physics.

Back

Power is the rate at which work is done, measured in Watts (W).

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy (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.