A 2 kg mass is moving at 3 m/s. Its kinetic energy is?

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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

A 2 kg mass is moving at 3 m/s. Its kinetic energy is?

Explanation:
Kinetic energy comes from how heavy something is and how fast it's moving, using KE = 1/2 m v^2. With mass 2 kg and speed 3 m/s, v^2 = 9. So KE = 0.5 × 2 × 9 = 9 joules. The other values would correspond to different speeds, not the given one, so 9 J is the correct result.

Kinetic energy comes from how heavy something is and how fast it's moving, using KE = 1/2 m v^2. With mass 2 kg and speed 3 m/s, v^2 = 9. So KE = 0.5 × 2 × 9 = 9 joules. The other values would correspond to different speeds, not the given one, so 9 J is the correct result.

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