Physics Quiz

What is the work-energy principle?

• Work done equals change in energy

• Work done equals force times distance

• Work done equals mass times acceleration

• Work done equals energy divided by time

Which of the following is an example of mechanical energy in everyday life?

• Roller coasters

• Boiling water

• Photosynthesis

• Evaporation

What is the equation for work in terms of kinetic and potential energy?

• W = ΔKE + ΔPE

• W = KE × PE

• W = KE - PE

• W = KE/PE

In the example problem, what is the mass of the object being dropped?

• 2 kg

• 5 kg

• 10 kg

• 20 kg

What is the value of gravitational acceleration (g) used in the problem-solving steps?

• 9.8 m/s²

• 10 m/s²

• 9.0 m/s²

• 8.9 m/s²

In the group problem-solving activity, what is the initial speed of the object launched vertically upward?

• 20 m/s

• 25 m/s

• 15 m/s

• 10 m/s

What is the mass of the skier in the individual problem-solving activity?

• 60 kg

• 1500 kg

• 500 kg

• 100 kg

What principle is applied in the problem-solving steps to solve for velocity?

• Work-energy principle

• Newton's second law

• Conservation of momentum

• Hooke's law

What is one type of problem that students are assigned for homework involving the work-energy principle?

• Problems involving friction

• Problems involving chemical reactions

• Problems involving electrical circuits

• Problems involving biological processes

What is an example of a real-world scenario where the work-energy principle can be applied, as mentioned in the extension activity?

• Bungee jumping

• Photosynthesis

• Cell division

• Photoshop editing