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A 3 kg object is moving with a velocity of 4 m/s. If it comes to a stop, what is the work done by the friction force?

Practice Questions

1 question
Q1
A 3 kg object is moving with a velocity of 4 m/s. If it comes to a stop, what is the work done by the friction force?
  1. -24 J
  2. -48 J
  3. -12 J
  4. -36 J

Questions & Step-by-step Solutions

1 item
Q
Q: A 3 kg object is moving with a velocity of 4 m/s. If it comes to a stop, what is the work done by the friction force?
Solution: Work done by friction = - Kinetic Energy = - (0.5 × 3 kg × (4 m/s)²) = -24 J.
Steps: 0

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