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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the kinetic energy of a 2 kg ball moving at 10 m/s.
💡 Hint: Use the kinetic energy formula.
Question 2
Easy
If an object has a kinetic energy of 50 J and its velocity is 10 m/s, what is its mass?
💡 Hint: Use the kinetic energy formula and solve for mass.
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 kinetic energy?
- A) KE = mv
- B) KE = (1/2)mv²
- C) KE = mv²
💡 Hint: Think about how mass and speed influence energy.
Question 2
If a moving object’s speed is increased, what happens to its kinetic energy?
- True
- False
💡 Hint: Recall how speed is factored into the kinetic energy formula.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A truck with a mass of 9000 kg travels at 15 m/s. Calculate its kinetic energy. After it collides and loses half its speed, what is the new kinetic energy?
💡 Hint: Calculate initial and final kinetic energies using the formula.
Question 2
A cyclist with a mass of 70 kg is cycling at 10 m/s. How much additional kinetic energy does she gain if she speeds up to 20 m/s?
💡 Hint: Calculate the change in KE by finding the difference between final and initial kinetic energies.
Challenge and get performance evaluation