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A 3 kg block is sliding on a frictionless surface with a velocity of 4 m/s. What

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Question: A 3 kg block is sliding on a frictionless surface with a velocity of 4 m/s. What is the momentum of the block?

Options:

  1. 12 kg·m/s
  2. 8 kg·m/s
  3. 6 kg·m/s
  4. 4 kg·m/s

Correct Answer: 12 kg·m/s

Solution: 

Momentum p = mv = 3 kg * 4 m/s = 12 kg·m/s.

A 3 kg block is sliding on a frictionless surface with a velocity of 4 m/s. What

Practice Questions

Q1
A 3 kg block is sliding on a frictionless surface with a velocity of 4 m/s. What is the momentum of the block?
  1. 12 kg·m/s
  2. 8 kg·m/s
  3. 6 kg·m/s
  4. 4 kg·m/s

Questions & Step-by-Step Solutions

A 3 kg block is sliding on a frictionless surface with a velocity of 4 m/s. What is the momentum of the block?
Correct Answer: 12 kg·m/s
  • Step 1: Identify the mass of the block. The mass is given as 3 kg.
  • Step 2: Identify the velocity of the block. The velocity is given as 4 m/s.
  • Step 3: Use the formula for momentum, which is p = mv (momentum = mass × velocity).
  • Step 4: Substitute the values into the formula: p = 3 kg * 4 m/s.
  • Step 5: Calculate the momentum: 3 kg * 4 m/s = 12 kg·m/s.
  • Momentum – Momentum is the product of an object's mass and its velocity, represented by the formula p = mv.
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