Question detail

Calculate the kinetic energy of a 3 kg object moving at a speed of 12 m/s.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Energy changes in a system, and the ways energy is stored before and after such changes

Question

216 J

Using the formula Ek = 0.5 x m x v^2, we find Ek = 0.5 x 3 kg x (12 m/s)^2 = 216 J.

Common Mistake in Kinetic Energy Calculation

Students often forget to square the speed when using the kinetic energy formula, leading to incorrect calculations.

Always remember to apply the formula Ek = 0.5 x m x v^2 correctly, ensuring that the speed (v) is squared.

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