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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define work in scientific terms.
💡 Hint: Think about the formula W = F × s.
Question 2
Easy
What is the unit of energy?
💡 Hint: It's the same unit as 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 unit of work?
- Joules
- Newtons
- Watts
💡 Hint: It's the same as the unit for energy.
Question 2
True or False: Potential energy increases as an object is lifted above the ground.
- True
- False
💡 Hint: Memorize the formula E_p = mgh.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An astronaut in space pushes off a satellite. Explain the work done despite the absence of gravity and how this relates to energy.
💡 Hint: Consider how forces can exist without gravity affecting work.
Question 2
A child slides down a slide of height 5 m. Calculate the change in potential energy using a weight of 20 kg.
💡 Hint: Think about energy conversion in the fall.
Challenge and get performance evaluation