Question:medium

A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?

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Remember: The kinetic energy of an object depends on its mass and velocity. It is directly proportional to the square of the velocity.
Updated On: Nov 26, 2025
  • 6 J
  • 9 J
  • 12 J
  • 18 J
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The Correct Option is B

Solution and Explanation

Step 1: Apply the kinetic energy formula The kinetic energy (\( KE \)) of an object is calculated using the formula:\[KE = \frac{1}{2} m v^2\]In this formula:- \( m \) represents the object's mass,- \( v \) represents the object's velocity.Step 2: Input the provided data Data provided:- Mass \( m = 2 \, \text{kg} \),- Velocity \( v = 3 \, \text{m/s} \).Insert these values into the kinetic energy formula:\[KE = \frac{1}{2} \times 2 \times (3)^2 = 1 \times 9 = 9 \, \text{J}\]Result: The kinetic energy of the object is 9 J. Thus, option (2) is the correct choice.
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