Want to see correct answers?
Login or join for free!
  Physics Worksheets
Looking for Physics worksheets?
Check out our pre-made Physics worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 9 questions. View questions in All Grades.

Kindergarten Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College Graduate

Browse Questions

Ninth Grade (Grade 9) Mechanics Questions

You can create printable tests and worksheets from these Grade 9 Mechanics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 2 of 16 Next
Grade 9 Forces and Motion
What is Newton's third law of motion?
  1. If an object applies a force on another object, the latter will stop moving.
  2. If an object exerts a force on another object, then the latter must exert a force of equal magnitude and opposite direction back on the first object
  3. If an object exerts a force on another object, the object's velocity will cut into half.
  4. If an object exerts a force on another object, nothing happens.
Grade 9 Forces and Motion
Newton's First Law is also known as
  1. The Law of Velocity.
  2. The Law of Gravity.
  3. The Law of Inertia.
  4. The Law of Conservation.
  5. The Law of the Land.
Grade 9 Forces and Motion
Two different forces acting on a falling leaf are                                  .
  1. gravity and air resistance
  2. air resistance and fluid friction
  3. gravity and static friction
  4. weight and rolling friction
Grade 9 Forces and Motion
An astronaut drops a hammer and an egg while standing on the surface of the Moon. Which one will hit the surface first?
  1. the egg
  2. the hammer
  3. both will land at the same time
  4. neither, both will float off into space
Grade 9 Forces and Motion
Which two factors affect gravitational force? Choose TWO answers.
  1. mass
  2. velocity
  3. momentum
  4. distance
  5. inertia
Grade 9 Forces and Motion
What is Newton's second law of motion?
  1. An object's mass depends directly on the acceleration of the object.
  2. An object's acceleration is indirectly related to an object's mass.
  3. The acceleration of an object is directly related to the net force and inversely related to its mass.
  4. The acceleration of an object is not related to the net force and is directly proportional to its mass.
Grade 9 Forces and Motion
Not all moving parts are subject to friction.
  1. True
  2. False
Grade 9 Energy and Momentum

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

As the rubber band is released and moves forward, which of the following is true?
  1. The total energy of the system is increasing.
  2. Potential energy is being converted to kinetic energy.
  3. Kinetic energy is being converted to potential energy.
  4. All of the energy is disappearing from the system.
Grade 9 Forces and Motion
A change in position is called                .
  1. motion
  2. displacement
  3. acceleration
  4. velocity
Grade 9 Forces and Motion
If an object is at rest, it experiences motion.
  1. True
  2. False
Grade 9 Forces and Motion
What is the formula for speed?
  1. speed=distance/displacement
  2. speed=time/speed
  3. speed=time/distance
  4. speed=distance/time
Grade 9 Forces and Motion
A push or pull that one body exerts on another is                .
  1. velocity
  2. force
  3. mass
  4. acceleration
Grade 9 Forces and Motion
The greater the inertia, the greater an object's                .
  1. speed
  2. mass
  3. velocity
  4. acceleration
Grade 9 Forces and Motion
Which of the following quantities is scalar?
  1. displacement
  2. force
  3. mass
  4. velocity
Grade 9 Forces and Motion
An object will remain at rest if the forces acting on it are                .
  1. constant
  2. positive
  3. unbalanced
  4. balanced
Grade 9 Forces and Motion
Why does a body performing uniform circular motion has constant speed but variable velocity?
  1. It experiences a centripetal force.
  2. Its centripetal force and centrifugal forces balance each other.
  3. It experiences centrifugal force.
  4. Its direction of motion changes.
Grade 9 Fluid Mechanics
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 of the following is the best statement that describes this phenomenon?
  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.
Previous Page 2 of 16 Next