Work & Energy Quiz

What is the formula for calculating work done?

• Work done = power x time

• Work done = force x distance

• Work done = mass x acceleration

• Work done = velocity x time

In which unit is work done measured?

• Newtons

• Joules

• Meters

• Watts

What happens when a force is applied to an object but it doesn't move?

• The object gains speed

• Energy is transferred

• Work is done

• No work is done

What is the gravitational field strength on Earth?

• 15 N/kg

• 12 N/kg

• 9.8 N/kg

• 10 N/kg

What type of energy is transferred when a bird flies through the air?

• Chemical energy to electrical energy

• Thermal energy to potential energy

• Potential energy to kinetic energy

• Kinetic energy to thermal energy

What is the work done by the brakes in stopping a car with a force of 500 N over 23 m?

• 11000 J

• 10000 J

• 12000 J

• 11500 J

What is the energy transfer when a ball is lifted to a height?

• Kinetic to gravitational potential

• Gravitational potential to kinetic

• Thermal to kinetic

• Chemical to thermal

A woman draws a bucket up out of a well. She has to apply a force of 120N to lift the bucket 15m. Calculate the work done. You do not need to include your units in your answer.

Mathematical Equivalence

ON

What is the formula for gravitational potential energy?

• GPE = force x distance

• GPE = mass x gravitational field strength x height

• GPE = mass x velocity

• GPE = power x time

What is the energy transfer when a woman draws a bucket from a well?

• Kinetic to thermal

• Chemical to electrical

• Thermal to kinetic

• Mechanical to gravitational potential