Newton's Second Law: Meaning & Calculations


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A hockey puck slides across the ice with an applied force of 20N. There is minimal friction on the ice and force due to friction is only 0.5N. What is the net force acting on the hockey puck?

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1. A helicopter is taking off from the helipad. The helicopter weighs 11000 N. Its blades create a lift force of 12000 N and a forward thrust of 7000 N. Air resistance (friction) at the speed it is moving is 550 N. What is the net horizontal force on the helicopter?

2. What is slope equal to on a force versus acceleration graph?

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About This Quiz & Worksheet

With this quiz/worksheet, you'll answer questions on the meaning of Newton's second law. Topics include a calculation of the net force on a moving object and the acceleration of an object with resistance acting on it.

Quiz & Worksheet Goals

Multiple-choice questions will assess your knowledge of:

  • Slope and what it's equal to on a force versus acceleration graph
  • Acceleration of an object with friction acting on it
  • Free body diagram of a block with applied force and friction acting on it

Skills Practiced

  • Problem solving - use your acquired knowledge to solve the net force on a moving object
  • Information recall - access the knowledge you've gained regarding the calculation of the acceleration of an object that has resistance acting on it
  • Knowledge application - use your knowledge to determine which free body diagram fits a specific scenario and what force is equal to slope when it's equal to a force versus acceleration graph

Additional Learning

More information on this famous law in science is available in the video lesson titled Newton's Second Law: Meaning & Calculations. These topics will be covered:

  • Explanation of Newton's second law
  • Normal force
  • Change of motion for an object with a net force
  • Unbalanced forces