Define work done in the scientific sense.

A man pushes a box with a force of 40 N over a distance of 5 m. Calculate the work done.

State the formula for calculating gravitational potential energy (GPE).

State the formula for calculating kinetic energy (KE).

Calculate the kinetic energy of a 2 kg ball moving at 10 m/s.

Define power and state its SI unit.

A motor does 6000 J of work in 30 seconds. What is its power?

Describe the main energy transformation as a pendulum swings from its highest point down to its lowest point.

A 5 kg object is lifted from the floor to a shelf 2 m high. How much gravitational potential energy does it gain? (g = 10 m/s²).

What is elastic potential energy? Give an example.

If two cars of the same mass are moving, but car A is moving twice as fast as car B, how many times more kinetic energy does car A have?

What is the SI unit for both work and energy?

If a person pushes against a solid wall with all their might but the wall does not move, how much work have they done on the wall?

Two cranes lift the same load to the same height, but crane A does it in half the time of crane B. Which crane is more powerful?

What happens to the GPE of a bird as it flies higher in the sky?