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Ninth Grade (Grade 9) Forces and Motion Questions

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Grade 9 Forces and Motion
Why do roads are banked round curve?
  1. So that the centre of gravity of the vehicle will be low.
  2. To prevent vehicle from skidding of the road.
  3. To reduce the capital force.
  4. To prevent tires from wearing away too fast.
Grade 9 Forces and Motion
The distance traveled by a freely-falling body is proportional to
  1. the mass of the body.
  2. the square of the acceleration due to gravity.
  3. the square of the time of fall.
  4. the time of fall.
Grade 9 Forces and Motion
What kind of friction force occurs as a fish swims through water?
  1. static
  2. rolling
  3. sliding
  4. fluid
Grade 9 Forces and Motion
Which of the following are action and reaction forces involved?
  1. When stepping from a curb
  2. When a tennis racket strikes a tennis ball
  3. When rowing a boat
  4. All of the possible answers
Grade 9 Forces and Motion

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

It is possible the rubber band is applying a force to the paper ball even when the ball is not moving.
  1. True
  2. False
Grade 9 Forces and Motion
Which of Newton's laws states that an object at rest tends to stay at rest, and that an object in motion tends to stay in motion, unless acted upon by an external force?
  1. Newton's First Law of Motion
  2. Newton's Second Law of Motion
  3. Newton's Third Law of Motion
  4. None of the above
Grade 9 Forces and Motion
A man will exert the greatest pressure on a bench when he                           .
  1. lies flat on his back
  2. lies flat on his belly
  3. stands on both feet
  4. stands on toes of one foot
Grade 9 Forces and Motion
A stone is tied to a string and whirled round. What type of motion does the system execute?
  1. circular
  2. rotational
  3. simple harmonic
  4. spin
Grade 9 Forces and Motion
Two ropes are hanging from the ceiling and supporting a mass. The angles of the ropes are known but are not the same. Which two of the following techniques can you use to determine the tension in each rope?
  1. measure the tension with a scale
  2. divide the mass of the object by two
  3. use the formula M=Fa and trigonometry
  4. use the parallelogram rule
Grade 9 Forces and Motion
Newton's Second Law of Motion explains the relationship between
  1. mass, force, and velocity.
  2. mass, force, and acceleration.
  3. mass, acceleration, and static force.
  4. velocity, force, and air resistance.
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