Question detail

A car has a mass of 1200 kg and is moving at a speed of 15 m/s. What is its kinetic energy?

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

135000 J

The kinetic energy is calculated using the formula Ek = 0.5 x m x v^2. Substituting the values gives Ek = 0.5 x 1200 kg x (15 m/s)^2 = 135000 J.

Common Mistake in Rearranging Equations

Students often confuse the variables when rearranging energy equations, leading to incorrect calculations of mass or height.

To fix this, carefully identify each variable in the equation and ensure you understand the relationships between them before rearranging.

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