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Seventh Grade (Grade 7) Forces and Motion Questions

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Grade 7 Forces and Motion
When an unbalanced force acts on an object, the force                                         .
  1. changes the motion of the object
  2. is cancelled by another force
  3. does not change the motion of the object
  4. is equal to the weight of the object
Grade 7 Forces and Motion
Grade 7 Forces and Motion
Speed tells how fast an object travels. Velocity is the speed of the object and                                              .
  1. the amount of time the object has been moving
  2. the direction the object is moving
  3. how far the object has traveled
  4. the starting point of the object
Grade 7 Forces and Motion
Grade 7 Forces and Motion
The best definition of force is                             .
  1. a push or pull
  2. stored energy
  3. energy in motion
  4. anything that takes up space
Grade 7 Forces and Motion
These two factors determine the strength of the force of friction.
  1. speed and light
  2. how fast the objects are going and on what planet
  3. how big the objects are and how hard you push them
  4. how hard the surfaces push together and the types of surfaces involved
Grade 7 Forces and Motion
Which is a way of stating Newton's Third Law of Motion?
  1. for every action there is an equal and opposite reaction
  2. falling bodies always fall at a constant velocity
  3. acceleration is the force that moves cars
  4. balanced forces do not change an object's motion
Grade 7 Forces and Motion
Grade 7 Forces and Motion
Marco and Janice are playing tug of war. Marco is pulling at a force of 10 Newtons South. Janice is pulling with a force of 12 Newtons North. What is the likely outcome of this tug of war battle?
  1. 2 Newtons of force, North, Janice is winning
  2. 2 Newtons of force, South, Marco is winning
  3. 22 Newtons of force, North, Janice is winning
  4. 22 Newtons of force, South, Marco is winning
Grade 7 Forces and Motion
The strength of the force of gravity depends on
  1. the masses of the objects and their speeds.
  2. the masses of the objects and the distance between them.
  3. the weight of the objects and their speeds.
  4. the masses of the objects and their weights.
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