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 calculate the energy of a moving object based on its mass and speed.
Common mistake
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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