Motion & Forces - Chapter 2

17 Questions | Total Attempts: 115

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Motion & Forces - Chapter 2

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Questions and Answers
  • 1. 
    A push or a pull is called
    • A. 

      Motion

    • B. 

      Force

    • C. 

      Acceleration

    • D. 

      Velocity

  • 2. 
    James combines all the forces acting on a tennis ball.  He is finding.....
    • A. 

      Net force

    • B. 

      Inertia force

    • C. 

      Gravitational force

    • D. 

      Frictional force

  • 3. 
    Janet is sliding a box across the floor.  What does she need to know to calculate the force on the box?(F=ma)
    • A. 

      Mass and inertia

    • B. 

      Acceleration and friction

    • C. 

      Mass and acceleration

    • D. 

      Friction and gravity

  • 4. 
    Inertia is the resistance of an object to a change in its
    • A. 

      Gravity

    • B. 

      Motion

    • C. 

      Mass

    • D. 

      Balanced force

  • 5. 
    A soccer player kicks a ball that is at rest.  What do you predict will happen?
    • A. 

      The ball will not move

    • B. 

      The ball will lose momentum

    • C. 

      The ball will accelerate in the direction opposite the applied force

    • D. 

      The ball will accelerate in the same direction as the applied force

  • 6. 
    According to Newton's second law of motion, force equals mass times ......
    • A. 

      Velocity

    • B. 

      Momentum

    • C. 

      Acceleration

    • D. 

      Mass

  • 7. 
    When you push on a door, the door pushes back with an equal and opposite force.  These two forces are known as
    • A. 

      Mass and velocity force pairs

    • B. 

      Unbalanced force pairs

    • C. 

      Mass and acceleration force pairs

    • D. 

      Action/reaction force pairs

  • 8. 
    The momentum of an object is the product of its(p=mv)
    • A. 

      Mass and acceleration

    • B. 

      Mass and velocity

    • C. 

      Force and mass

    • D. 

      Net force and mass

  • 9. 
    A bowling ball rolls down the lane and hits some pins before rolling off the lane.  What happens to the momentum of the ball as it hits the pins?
    • A. 

      Some of the ball's momentum is transferred to the pins

    • B. 

      All of the ball's momentum is transferred to the pins

    • C. 

      None of the ball's momentum is transferred to the pins

    • D. 

      The pins stop the ball from rolling farther

  • 10. 
    Conservation of momentum occurs only when there are........
    • A. 

      No outside forces

    • B. 

      Balanced and unbalanced force pairs

    • C. 

      Gravity and friction

    • D. 

      Mass and inertia

  • 11. 
    What is the unit of force?
    • A. 

      Inch

    • B. 

      Kilometer

    • C. 

      Newton

    • D. 

      Kilogram

  • 12. 
    What symbol is used for force?
    • A. 

      N

    • B. 

      Kg

    • C. 

      F

    • D. 

      Cm

  • 13. 
    • A. 

      Gravitational force pushing up

    • B. 

      Contact force in pushing

    • C. 

      Inertia force

    • D. 

      Energy force

  • 14. 
    What force is being applied to the cart of it is accelerating at 2.2 m/s2 and the cart's mass is 55 kg?  The formula for calculating force is F=ma
    • A. 

      100N

    • B. 

      25N

    • C. 

      1000N

    • D. 

      121N

  • 15. 
    If you double the force on the cart, what happens to the acceleration?
    • A. 

      It doubles as well

    • B. 

      It gets twice as small

    • C. 

      It triples

    • D. 

      It get ten times bigger

  • 16. 
    What do the data show about momentum as the mass becomes larger? CarabcdefgMass of car (kg)1350140014501500155016001650Momentum (kg m/s)2970308031903300341035203630 
    • A. 

      Momentum decreases as mass becomes smaller

    • B. 

      Momentum increases as mass becomes smaller

    • C. 

      Momentum decreases as mass becomes larger

    • D. 

      Momentum increases as mass becomes larger

  • 17. 
    Use the data in the table to determine the velocity of car A.  The formula for calculating velocity is V=P/m (velocity = momentum/mass) carabcdefgmass of car (kg)1350140014501500155016001650momentum (kg m/s)2970308031903300341035203630
    • A. 

      .45 m/s

    • B. 

      2.2 m/s

    • C. 

      50 m/s

    • D. 

      1620 m/s