Energy Quiz

Calculate the work done when a force of 50 N is used to move an object 20 meters.

• 1000 J

• 2000 J

• 500 J

• 2500 J

A 500 N force is used to lift a box 10 meters. Calculate the work done.

• 2500 J

• 5000 J

• 1000 J

• 7500 J

If a force of 100 N is used to push a car 50 meters, calculate the work done.

• 2500 J

• 7500 J

• 5000 J

• 1000 J

A person applies a force of 60 N to push a cart 15 meters. Calculate the work done.

• 450 J

• 150 J

• 900 J

• 300 J

Explain the relationship between work and energy.

• Work is the transfer of energy from one object to another, and energy is the ability to do work.

• Work is the opposite of energy, they have no relationship

• Energy is the result of work, but work does not involve energy

• Work and energy are completely unrelated concepts

How is kinetic energy related to the work done?

• The work done on an object is equal to the change in its kinetic energy.

• Kinetic energy is equal to the work done

• Kinetic energy has no relation to the work done

• Kinetic energy is inversely proportional to the work done

Describe the relationship between potential energy and work done.

• Potential energy decreases as work done increases

• Potential energy and work done are completely unrelated

• Work done on an object can change its potential energy.

• Work done on an object has no effect on its potential energy

Explain the concept of conservation of energy.

• Energy can only be transformed into matter

• Energy can be created out of nothing

• Energy cannot be created or destroyed, only transformed from one form to another.

• Energy can be destroyed completely

Calculate the power if 500 J of work is done in 10 seconds.

• 250 W

• 100 W

• 30 W

• 50 W

A machine does 1000 J of work in 5 seconds. Calculate the power.

• 200 W

• 500 W

• 300 W

• 100 W