What is the kinetic energy of a 3 kg object moving at 4 m/s?

Prepare for the Year 10 Force and Motion Test. Utilize flashcards and multiple-choice questions with clear hints and explanations to ensure success. Equip yourself for excellence on your exam!

Multiple Choice

What is the kinetic energy of a 3 kg object moving at 4 m/s?

Explanation:
Kinetic energy comes from motion and is found using KE = 1/2 m v^2. Plugging in the values: m = 3 kg and v = 4 m/s gives v^2 = 16, so KE = 0.5 × 3 × 16 = 24 joules. This is the amount of energy the object has due to its motion. (Note that kinetic energy increases with both mass and the square of speed.)

Kinetic energy comes from motion and is found using KE = 1/2 m v^2. Plugging in the values: m = 3 kg and v = 4 m/s gives v^2 = 16, so KE = 0.5 × 3 × 16 = 24 joules. This is the amount of energy the object has due to its motion. (Note that kinetic energy increases with both mass and the square of speed.)

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