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A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?

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Question: A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?

Options:

  1. 25 J
  2. 50 J
  3. 100 J
  4. 250 J

Correct Answer: 100 J

Solution: 

Kinetic energy (KE) = 0.5 * mass * velocity² = 0.5 * 5 * (10)² = 250 J.

A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?

Practice Questions

Q1
A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
  1. 25 J
  2. 50 J
  3. 100 J
  4. 250 J

Questions & Step-by-Step Solutions

A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
Correct Answer: 250 J
  • Step 1: Identify the mass of the object. In this case, the mass is 5 kg.
  • Step 2: Identify the velocity of the object. Here, the velocity is 10 m/s.
  • Step 3: Use the formula for kinetic energy, which is KE = 0.5 * mass * velocity².
  • Step 4: Substitute the values into the formula: KE = 0.5 * 5 kg * (10 m/s)².
  • Step 5: Calculate the square of the velocity: (10 m/s)² = 100 m²/s².
  • Step 6: Multiply the mass by the squared velocity: 5 kg * 100 m²/s² = 500 kg*m²/s².
  • Step 7: Multiply by 0.5: 0.5 * 500 kg*m²/s² = 250 J.
  • Step 8: Conclude that the kinetic energy of the object is 250 Joules.
  • Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 0.5 * mass * velocity².
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