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Physics (29)

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Aerospace and MarineFriction Drag and Circular MotionPhysics

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Two surfaces rub as one slides on the other. The force that opposes that sliding is:Read the answer and worked solution →A person tries to walk on smooth ice and slips. What they are missing is:Read the answer and worked solution →A heavy crate sits still while a worker leans on it. The friction acting is:Read the answer and worked solution →A puck is already sliding across the ice. The friction slowing it is:Read the answer and worked solution →

Worked practice questions

Two surfaces rub as one slides on the other. The force that opposes that sliding is:

  1. Friction
  2. Fraction
  3. Fixation
  4. Flotation
Show answer and solution

Correct answer: A. Friction

1. Something resists the relative movement. 2. It acts where the two surfaces touch. 3. That force is friction. _Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._

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A person tries to walk on smooth ice and slips. What they are missing is:

  1. Flotation
  2. Friction
  3. Fraction
  4. Fixation
Show answer and solution

Correct answer: B. Friction

1. Walking needs the ground to grip the shoe. 2. Ice gives very little grip. 3. So friction is what is missing. _Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._

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A heavy crate sits still while a worker leans on it. The friction acting is:

  1. Static
  2. Stagnant
  3. Standard
  4. Straight
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Correct answer: A. Static

1. Nothing is moving relative to the floor. 2. Friction still opposes the attempted push. 3. That is static friction. _Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._

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