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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define work in physics.
π‘ Hint: Think of force and movement.
Question 2
Easy
What is the SI unit of energy?
π‘ Hint: It's also the same unit for work.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for work?
- W = F Γ s Γ cos ΞΈ
- W = F/s
- W = F + s
π‘ Hint: Check the relationships of force and direction.
Question 2
True or False: Energy can be created or destroyed.
- True
- False
π‘ Hint: Think about the conservation of energy principle.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A car of 1200 kg speed at 15 m/s. How much kinetic energy does it have and what would be its energy if it were lifted to a height of 10 m?
π‘ Hint: Calculate each separately using the respective formulas.
Question 2
Calculate the power if a force of 200N does 400 J of work in 5 seconds.
π‘ Hint: Use the power formula P = W/t.
Challenge and get performance evaluation