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Eighth Grade (Grade 8) Mechanics Questions

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Grade 8 Forces and Motion
Which best describes the motion of the object recorded in data table?
Data Table - Positive Acceleration
  1. it does not move
  2. it maintains a constant velocity
  3. it undergoes positive acceleration
  4. it undergoes negative acceleration
Grade 8 Forces and Motion
Which best describes the motion of the object recorded in data table?
Data Table - Constant Speed
  1. it does not move
  2. it maintains a constant velocity
  3. it undergoes positive acceleration
  4. it undergoes negative acceleration
Grade 8 Energy and Momentum
Any energy that is stored is called
  1. Kinetic Energy
  2. Cooking energy
  3. Potential energy
  4. Thermal energy
  5. Sound Energy
  6. Electrochemical Energy
Grade 8 Forces and Motion
A velocity-time graph of a moving object is shown. Which statement best describes the object's velocity between points D and E?
Velocity Vs. Time
  1. the object's velocity is increasing
  2. the object's velocity is decreasing
  3. the object's velocity is constant
  4. the object is stopped
Grade 8 Forces and Motion
Grade 8 Energy and Momentum
As a pendulum swings back and forth
  1. potential energy is transformed into kinetic energy.
  2. kinetic energy is transformed into potential energy.
  3. at the lowest part of its swing, its energy is all kinetic.
  4. at the end points of its swing, its energy is all potential.
  5. all of the above
Grade 8 Forces and Motion

This question is a part of a group with common instructions. View group »

A magician suddenly jerks a tablecloth out from under the dishes on a table. This best demonstrates
  1. an action-reaction pair of forces.
  2. that the dishes have inertia.
  3. that gravity tends to hold the dishes securely.
  4. that the dishes have no acceleration.
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