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Ninth Grade (Grade 9) Mechanics Questions

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Grade 9 Forces and Motion
Based on the data in the table, which of the following statements can be true about the object being measured?
Data Table - Negative Acceleration
  1. A net force is being applied in a direction opposite to its velocity.
  2. The object has an acceleration of -2 m/s/s.
  3. The graph of this object would be a straight line.
  4. All of the above are true.
Grade 9 Fluid Mechanics
When an object is submerged in a liquid, the fluid pressure is always strongest                                                    .
  1. On the bottom of the object because it is deeper
  2. On the top of the object because it is heavier
  3. The pressure is equal all the way around the object
  4. When balanced by gravity
  5. On more dense objects
Grade 9 Energy and Momentum
Grade 9 Forces and Motion
A capital force is one that does what?
  1. Act in the direction of motion
  2. Keeps an object moving in a circular track
  3. Acts tangentially to a circular track
  4. Accelerate an object in the direction of motion
Grade 9 Energy and Momentum
Which of the following does not demonstrate a form of energy?
  1. Electricity
  2. Light
  3. A moving object
  4. All of these are forms of energy
Grade 9 Forces and Motion

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

What makes the paper ball fly through the air after it is no longer touching the rubber band?
  1. the momentum of the ball
  2. the force of air resistance
  3. the force of the rubber band
  4. the efficiency of the system
Grade 9 Forces and Motion
Which of the following is not an example of motion under constant acceleration?
  1. Satellite in orbit
  2. A store moving vertically upwards
  3. The blades of windmill in motion
  4. Motion of a pendulum
Grade 9 Forces and Motion
Grade 9 Energy and Momentum
Grade 9 Fluid Mechanics
Which one of the following substances will float in water? (Note: The density of water is 1.0 gcm3.)
  1. gold- density = 19.3 g/cm
  2. milk - density = 1.03 g/cm
  3. ice - density 0.92 g/cm
  4. b and c
Grade 9 Forces and Motion
The amount of air resistance depends on the speed of a falling object and
  1. the mass of the object.
  2. gravitational pull of Earth.
  3. the time of day the object is falling.
  4. amount of surface area of the object.
Grade 9 Fluid Mechanics
Bernoulli's principle applies to                         .
  1. gases only
  2. liquids only
  3. both gases and liquids
  4. neither gases or liquids
Grade 9 Forces and Motion
The force(s) applied by a car with front wheel drive is (are)
  1. a push.
  2. a pull.
  3. a push and a pull.
  4. without friction.
Grade 9 Forces and Motion
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