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Ninth Grade (Grade 9) Physics Questions

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Grade 9 :: Fluid Mechanics by kurtman
You open a cooler to get a soda on a hot summer day and notice a can of diet soda is floating while the cans of regular soda are not floating. What can you infer about this situation? Which is the best statement that describes why?
  1. The water must be flowing upward in the area of the diet soda.
  2. There must be less matter in the regular can of soda.
  3. The diet soda must have less mass per unit of volume than the surrounding water.
  4. The diet soda can must be made of a different kind of material.
Grade 9 :: Energy and Momentum by Ddavis88
What is equal to the product of mass and velocity?
  1. inertia
  2. force of gravity
  3. weight
  4. momentum
Grade 9 :: Forces and Motion by Courtney_Nicole
An object with a mass of 1 kilogram on Earth
  1. has less mass on the Moon
  2. has the same mass on the Moon
  3. has more mass on the Moon
  4. weighs the same everywhere
Grade 9 :: Forces and Motion by Courtney_Nicole
Consider your book is at rest on a table. When you push it horizontally and it's on the verge of sliding, but still at rest, friction on the book acts in a direction that is
  1. opposite to your push
  2. the same direction as your push
  3. at right angles to your push
  4. in no direction until the book slides
Grade 9 :: Forces and Motion by Courtney_Nicole
The acceleration of a rain drop that falls at constant velocity
  1. is zero
  2. is directed downward
  3. decreases over time
  4. increases over time
Grade 9 :: Forces and Motion by Courtney_Nicole
Grade 9 :: Forces and Motion by Courtney_Nicole
If a ball rolls down an inclined plane and picks up a speed of 4 m/s each second it rolls, its acceleration is
  1. one half of 4 m/s
  2. one half of 4 m/s squared
  3. 4 m/s squared
  4. 10 m/s squared
Grade 9 :: Forces and Motion by Courtney_Nicole
Grade 9 :: Forces and Motion by lisamarie137
The greater the inertia, the greater an object's
  1. speed
  2. mass
  3. velocity
  4. acceleration
Grade 9 :: Forces and Motion by lisamarie137
An object will remain at rest if the forces are
  1. constant
  2. positive
  3. unbalanced
  4. balanced
Grade 9 :: Forces and Motion by lisamarie137
Horizontal lines on a velocity/time graph show
  1. constant acceleration
  2. no motion
  3. positive acceleration
  4. negative acceleration
Grade 9 :: Forces and Motion by lisamarie137
Distance is
  1. a change in position
  2. a measure of how far an object has moved
  3. the distance and direction of an object's change on position from a reference point
  4. the distance traveled per unit of time
Grade 9 :: Forces and Motion by lisamarie137
Grade 9 :: Forces and Motion by lisamarie137
A change in position is called
  1. motion
  2. displacement
  3. acceleration
  4. velocity
Grade 9 :: Forces and Motion by lisamarie137
Distance traveled per unit of time is
  1. velocity
  2. speed
  3. motion
  4. acceleration
Grade 9 :: Forces and Motion by lisamarie137
A single point on a distance/time graph shows the
  1. constant speed
  2. instantaneous speed
  3. velocity
  4. acceleration speed
Grade 9 :: Forces and Motion by lisamarie137
An example of instantaneous speed is
  1. a merry-go-round
  2. running down the road
  3. riding uphill
  4. a speedometer
Grade 9 :: Forces and Motion by lisamarie137
The formula for speed is
  1. speed=distance/displacement
  2. speed=time/speed
  3. speed=time/distance
  4. speed=distance/time
Grade 9 :: Forces and Motion by lisamarie137
Speed is
  1. a change in position
  2. distance traveled per unit of time
  3. the rate of change of velocity
  4. measure of how far an object has moved
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