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A car of mass 1000 kg is moving at a speed of 20 m/s. What is its total mechanical energy assuming no friction?

Practice Questions

1 question
Q1
A car of mass 1000 kg is moving at a speed of 20 m/s. What is its total mechanical energy assuming no friction?
  1. 200,000 J
  2. 400,000 J
  3. 300,000 J
  4. 100,000 J

Questions & Step-by-step Solutions

1 item
Q
Q: A car of mass 1000 kg is moving at a speed of 20 m/s. What is its total mechanical energy assuming no friction?
Solution: Total Mechanical Energy = Kinetic Energy + Potential Energy. KE = 1/2 * m * v^2 = 1/2 * 1000 * (20^2) = 200,000 J (assuming PE = 0)
Steps: 0

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