A 3 kg object is moving with a speed of 10 m/s. What is its total mechanical ene

Practice Questions

Q1
A 3 kg object is moving with a speed of 10 m/s. What is its total mechanical energy?
  1. 150 J
  2. 300 J
  3. 450 J
  4. 600 J

Questions & Step-by-Step Solutions

A 3 kg object is moving with a speed of 10 m/s. What is its total mechanical energy?
  • Step 1: Identify the mass of the object. The mass is 3 kg.
  • Step 2: Identify the speed of the object. The speed is 10 m/s.
  • Step 3: Understand that total mechanical energy is the sum of kinetic energy (KE) and potential energy (PE).
  • Step 4: Assume potential energy (PE) is 0 for this problem.
  • Step 5: Use the formula for kinetic energy: KE = 0.5 * m * v².
  • Step 6: Substitute the values into the formula: KE = 0.5 * 3 kg * (10 m/s)².
  • Step 7: Calculate (10 m/s)², which is 100 m²/s².
  • Step 8: Multiply 3 kg by 100 m²/s² to get 300 kg*m²/s².
  • Step 9: Multiply 300 kg*m²/s² by 0.5 to get 150 J.
  • Step 10: Conclude that the total mechanical energy is 150 J.
  • Kinetic Energy (KE) – The energy possessed by an object due to its motion, calculated using the formula KE = 0.5 * m * v².
  • Potential Energy (PE) – The energy stored in an object due to its position or configuration; in this case, it is assumed to be zero.
  • Total Mechanical Energy – The sum of kinetic and potential energy in a system, which remains constant in the absence of non-conservative forces.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely