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Seventh Grade (Grade 7) Mechanics Questions

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Grade 7 Forces and Motion
If an object's mass is 200 grams, what is the weight of this object?
  1. 4.95 N
  2. 180.16 N
  3. 1.96 N
  4. None of the above
Grade 7 Forces and Motion
An object's inertia is affected by its mass.
  1. True
  2. False
Grade 7 Forces and Motion
What is friction?
  1. A force
  2. A substance
  3. A solid
  4. A gas
Grade 7 Energy and Momentum
How much power is needed to complete 150 Joules of work in 40 seconds?
  1. 3.75 (3 3/4) watts
  2. 600 watts
  3. 14 watts
Grade 7 Forces and Motion
Weight is the measurement of the force of                  on an object.
  1. gravity
  2. sliding friction
  3. fluid friction
  4. velocity
Grade 7 Forces and Motion
What is the time that passes between one event and another called?
  1. Speed
  2. Time Warp
  3. Time Line
  4. Elapsed Time
Grade 7 Forces and Motion
According to the Law of Universal Gravitation, which two objects have the greatest gravitational force?
  1. You and Earth
  2. An elephant and Earth
  3. You and the elephant
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