Energy & Work

The International System (SI) unit of energy is ...

The energy possessed by an object because it is moving is called ... energy.

The energy an object has because of its position or height is called ... energy.

In physics, work is defined as ...

The SI unit of power is ...

The energy change that happens in a lit lamp is ...

A 20 N force pushes a table 5 m in the direction of the force. The work done is ...

A machine does 600 joules of work in 3 seconds. Its power is ...

A 2 kg object is at a height of 3 m. If the gravitational acceleration is 10 m/s², its potential energy is ...

The energy change that happens in a running electric fan is ...

A person pushes a wall, but the wall does not move at all. The work they do is ...

A 2 kg ball moves at a speed of 3 m/s. Its kinetic energy is ...

During photosynthesis, plants change ... energy into chemical energy.

Which of the following activities counts as doing work?

A 50 N force moves an object 8 m in 4 seconds. The power produced is ...

The law of conservation of energy states that energy ...

Two objects of equal mass are placed at different heights. The object at the higher position has ...

A device does 1,500 joules of work in 5 seconds. Its power is ...

Which condition makes the work done equal to zero?

An object falls freely so its potential energy changes into kinetic energy. When it just touches the ground, its potential energy is ...