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Mechanics Questions - All Grades

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Grade 4 Forces and Motion
Force is                                  .
  1. the push or pull on an object
  2. when an object changes position
  3. a model built by an engineer
  4. a force that works against motion
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 4 Forces and Motion
Which of the following is considered an invisible force?
  1. Gravity
  2. Friction
  3. Air resistance
  4. All of the above
Grade 11 Forces and Motion
When an object is in free fall,                         .
  1. its speed stays the same
  2. it decelerates
  3. it accelerates
  4. none of the above
Grade 6 Forces and Motion
Average speed is equal to                .
  1. distance/time
  2. time/distance
  3. distance + time
  4. distance * time
Grade 5 Forces and Motion
Grade 5 Forces and Motion
Once something is still, it tends to                                              .
  1. start moving by itself
  2. start moving easily
  3. stay still even when forces are applied to it
  4. stay still until a force is applied to it
Grade 9 Energy and Momentum
Grade 9 Forces and Motion
The weight of an object                                                   .
  1. stays the same wherever the object is.
  2. changes if the object is in motion.
  3. stays the same as long as the object is in motion.
  4. changes if the force of gravity changes.
Grade 6 Forces and Motion
What does Newton's first law of motion state?
  1. An object in motion stays in motion unless a force acts on it.
  2. An object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it.
  3. An object at rest stays at rest unless a force acts on it.
  4. Every action has an equal and opposite reaction.
  5. Both A and C.
Grade 6 Forces and Motion
What does Newton's third law of motion state?
  1. An object in motion stays in motion unless a force acts on it.
  2. An object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it.
  3. An object at rest stays at rest unless a force acts on it.
  4. Every action has an equal and opposite reaction.
  5. Both A and C.
Grade 5 Energy and Momentum
Grade 6 Forces and Motion
What does Newton's second law of motion state?
  1. An object in motion stays in motion unless a force acts on it.
  2. An object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it.
  3. An object at rest stays at rest unless a force acts on it.
  4. Every action has an equal and opposite reaction.
  5. Both A and C.
Grade 4 Energy and Momentum
The ability to cause a change is called                .
  1. kinetic energy
  2. thermal energy
  3. energy
  4. conduction
Grade 9 Forces and Motion
Seat belt laws are a good idea because of which of the following law of motion?
  1. Newton's second law of motion
  2. Newton's first law of motion
  3. Newton's third law of motion
  4. Murphy's law of motion
  5. None of the above
Grade 11 Forces and Motion
Velocity is                                     .
  1. the slope of a linear graph
  2. acceleration divided by displacement
  3. speed with direction
  4. the same in all reference frames
Grade 6 Forces and Motion
Grade 7 Forces and Motion
Grade 8 Forces and Motion
A force is a                     .
  1. constant speed
  2. push or pull
  3. linear quantity
  4. cannot be determined
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