A 50 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?

Practice Questions

Q1
A 50 kg object is moving with a velocity of 10 m/s. What is its kinetic energy? (2022)
  1. 2500 J
  2. 500 J
  3. 1000 J
  4. 2000 J

Questions & Step-by-Step Solutions

A 50 kg object is moving with a velocity of 10 m/s. What is its kinetic energy? (2022)
  • Step 1: Identify the mass of the object. In this case, the mass (m) is 50 kg.
  • Step 2: Identify the velocity of the object. Here, the velocity (v) is 10 m/s.
  • Step 3: Write down the formula for kinetic energy (KE). The formula is KE = (1/2)mv².
  • Step 4: Substitute the values of mass and velocity into the formula. This gives us KE = (1/2)(50 kg)(10 m/s)².
  • Step 5: Calculate the square of the velocity. 10 m/s squared is 100 m²/s².
  • Step 6: Multiply the mass by the squared velocity. This gives us 50 kg * 100 m²/s² = 5000 kg·m²/s².
  • Step 7: Now, multiply this result by 1/2. So, (1/2) * 5000 kg·m²/s² = 2500 J.
  • Step 8: The final answer is that the kinetic energy of the object is 2500 Joules (J).
  • Kinetic Energy – Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = (1/2)mv², where m is mass and v is velocity.
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