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A car accelerates from rest to a speed of 20 m/s. If its mass is 1000 kg, what is the work done by the engine?

Practice Questions

1 question
Q1
A car accelerates from rest to a speed of 20 m/s. If its mass is 1000 kg, what is the work done by the engine?
  1. 200,000 J
  2. 100,000 J
  3. 50,000 J
  4. 400,000 J

Questions & Step-by-step Solutions

1 item
Q
Q: A car accelerates from rest to a speed of 20 m/s. If its mass is 1000 kg, what is the work done by the engine?
Solution: Work Done = Change in Kinetic Energy = 1/2 * m * (v^2) = 1/2 * 1000 * (20^2) = 200,000 J
Steps: 0

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