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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 mechanical energy.
💡 Hint: What do we mean when we talk about energy that is 'in motion' or 'stored'?
Question 2
Easy
What is kinetic energy expressed in formula?
💡 Hint: Think about how mass and speed factor into this type of energy.
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 happens to mechanical energy in a closed system without non-conservative forces?
- It increases
- It decreases
- It remains constant
- It dissipates as heat
💡 Hint: Consider the principle of energy conservation.
Question 2
True or False: Non-conservative forces, like friction, help in conserving mechanical energy.
- True
- False
💡 Hint: What do we mean by energy being lost in a system?
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A child slides down a frictionless slide that is 5 meters high. Calculate the child's speed at the bottom of the slide.
💡 Hint: How does potential energy convert to kinetic energy at the bottom?
Question 2
A spring with a spring constant of 200 N/m is compressed by 0.3 m. What is the potential energy stored in the spring?
💡 Hint: Consider the relation of compression length to potential energy.
Challenge and get performance evaluation