A 12 kg object is moving with a velocity of 5 m/s. What is its kinetic energy?

Practice Questions

Q1
A 12 kg object is moving with a velocity of 5 m/s. What is its kinetic energy?
  1. 150 J
  2. 120 J
  3. 100 J
  4. 75 J

Questions & Step-by-Step Solutions

A 12 kg object is moving with a velocity of 5 m/s. What is its kinetic energy?
  • Step 1: Identify the mass of the object. The mass (m) is 12 kg.
  • Step 2: Identify the velocity of the object. The velocity (v) is 5 m/s.
  • Step 3: Write down the formula for kinetic energy (KE). The formula is KE = 0.5 * m * v².
  • Step 4: Calculate the square of the velocity. (5 m/s)² = 25 m²/s².
  • Step 5: Multiply the mass by the square of the velocity. 12 kg * 25 m²/s² = 300 kg*m²/s².
  • Step 6: Multiply the result by 0.5. 0.5 * 300 kg*m²/s² = 150 J.
  • Step 7: State the final answer. The kinetic energy is 150 Joules (J).
  • Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 0.5 * m * v², where m is mass and v is velocity.
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