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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 energy in your own words.
💡 Hint: Think about what happens during a physical activity.
Question 2
Easy
What is work in physics?
💡 Hint: Consider pushing an object.
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 × d
- W = F + m
- W = m × a
💡 Hint: Remember how work is calculated in physics.
Question 2
True or False: Power is the rate at which work is done.
- True
- False
💡 Hint: Think about how fast something is moving.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A ball is dropped from a height of 20m. Calculate the gravitational potential energy at the top and the kinetic energy just before it hits the ground. Use g = 9.81 m/s².
💡 Hint: Think about energy conservation principles.
Question 2
A machine does 500 J of work in 10 seconds. What is its power output? Then, if the machine was 80% efficient, how much energy did it consume?
💡 Hint: Use formulas for power and efficiency to approach the problem step by step.
Challenge and get performance evaluation