Question detail
A car has a mass of 1200 kg and is moving at a speed of 15 m/s. Calculate its kinetic energy.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
A car has a mass of 1200 kg and is moving at a speed of 15 m/s. Calculate its kinetic energy.
Answer
The kinetic energy of the car is 135000 J.
Explanation
This question tests the ability to apply the kinetic energy formula, Ek = 0.5 x m x v^2, to find the energy of a moving object based on its mass and speed.
Common mistake
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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