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A block of mass 5 kg is placed on a frictionless surface and is pushed with a fo

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Question: A block of mass 5 kg is placed on a frictionless surface and is pushed with a force of 20 N. What is the acceleration of the block?

Options:

  1. 2 m/s²
  2. 4 m/s²
  3. 5 m/s²
  4. 10 m/s²

Correct Answer: 4 m/s²

Solution: 

Using Newton\'s second law, F = ma, we have a = F/m = 20 N / 5 kg = 4 m/s².

A block of mass 5 kg is placed on a frictionless surface and is pushed with a fo

Practice Questions

Q1
A block of mass 5 kg is placed on a frictionless surface and is pushed with a force of 20 N. What is the acceleration of the block?
  1. 2 m/s²
  2. 4 m/s²
  3. 5 m/s²
  4. 10 m/s²

Questions & Step-by-Step Solutions

A block of mass 5 kg is placed on a frictionless surface and is pushed with a force of 20 N. What is the acceleration of the block?
  • Step 1: Identify the mass of the block, which is 5 kg.
  • Step 2: Identify the force applied to the block, which is 20 N.
  • Step 3: Recall Newton's second law of motion, which states that Force (F) equals mass (m) times acceleration (a), or F = ma.
  • Step 4: Rearrange the formula to solve for acceleration (a): a = F/m.
  • Step 5: Substitute the values into the formula: a = 20 N / 5 kg.
  • Step 6: Calculate the acceleration: a = 4 m/s².
  • Newton's Second Law – This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
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