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A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N.

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Question: A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N. If the block moves a distance of 5 m, what is the work done by the force?

Options:

  1. 10 J
  2. 20 J
  3. 30 J
  4. 50 J

Correct Answer: 20 J

Solution: 

Work done = Force × Distance = 10 N × 5 m = 50 J.

A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N.

Practice Questions

Q1
A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N. If the block moves a distance of 5 m, what is the work done by the force?
  1. 10 J
  2. 20 J
  3. 30 J
  4. 50 J

Questions & Step-by-Step Solutions

A block of mass 2 kg is pushed along a horizontal surface with a force of 10 N. If the block moves a distance of 5 m, what is the work done by the force?
Correct Answer: 50 J
  • Step 1: Identify the force applied to the block. In this case, the force is 10 N.
  • Step 2: Identify the distance the block moves. Here, the distance is 5 m.
  • Step 3: Use the formula for work done, which is Work = Force × Distance.
  • Step 4: Substitute the values into the formula: Work = 10 N × 5 m.
  • Step 5: Calculate the result: 10 N × 5 m = 50 J.
  • Step 6: Conclude that the work done by the force is 50 Joules.
  • Work Done – Work done is calculated as the product of the force applied and the distance moved in the direction of the force.
  • Units of Work – Work is measured in joules (J), where 1 J = 1 N·m.
  • Horizontal Motion – The problem assumes no friction or other forces acting against the motion, simplifying the calculation.
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