A 2 kg object moves at 3 m/s. What is its kinetic energy?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the DOST Science Exam. Utilize flashcards and multiple-choice questions with detailed explanations. Achieve success with clear, concise study materials and effective strategies.

Multiple Choice

A 2 kg object moves at 3 m/s. What is its kinetic energy?

Explanation:
Kinetic energy is the energy of motion, calculated as KE = 1/2 m v^2. With a mass of 2 kg and speed of 3 m/s, substitute: KE = 0.5 × 2 × (3)^2 = 1 × 9 = 9 joules. So the object’s kinetic energy is 9 J. The other values would require different speeds (for example, a higher speed gives more energy, and zero speed gives zero energy), but with the given mass and speed, 9 J is the correct amount.

Kinetic energy is the energy of motion, calculated as KE = 1/2 m v^2. With a mass of 2 kg and speed of 3 m/s, substitute: KE = 0.5 × 2 × (3)^2 = 1 × 9 = 9 joules. So the object’s kinetic energy is 9 J. The other values would require different speeds (for example, a higher speed gives more energy, and zero speed gives zero energy), but with the given mass and speed, 9 J is the correct amount.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy