Newton's Second Law Review

21 Questions | Total Attempts: 41

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Newton


Questions and Answers
  • 1. 
    Which equation below represents the mathematical expression of Newton's second law of motion?
    • A. 

      F = m/a

    • B. 

      F = m x a

    • C. 

      F x m = a

    • D. 

      F x a = m

  • 2. 
    Doubling the mass of an object has what effect on acceleration?
    • A. 

      Doubles accleration

    • B. 

      Halves accleration

    • C. 

      Has no affect

    • D. 

      Banana

  • 3. 
    Doubling the net force on an object has what effect on acceleration?
    • A. 

      Doubles accleration

    • B. 

      Halves accleration

    • C. 

      Has no affect

    • D. 

      Banana

  • 4. 
    Acceleration is....
    • A. 

      Always in the direction of motion.

    • B. 

      Can be either in the direction of the net force, or opposite

    • C. 

      Caused by balanced forces

    • D. 

      Always in the direction of the net force

  • 5. 
    Mass is _________________ proportional to acceleration.
    • A. 

      Inversely

    • B. 

      Directly

    • C. 

      Equally

    • D. 

      Banana

  • 6. 
    Force is _________________ proportional to acceleration.
    • A. 

      Inversely

    • B. 

      Directly

    • C. 

      Equally

    • D. 

      Banana

  • 7. 
    If an object is traveling to the right and slowing down, the direction of the net force is...
    • A. 

      To the right

    • B. 

      To the left

    • C. 

      Straight up

    • D. 

      No net force

  • 8. 
    An arrow is fired straight up into the air.  After it leaves the bow the direction of the acceleration is...
    • A. 

      Up

    • B. 

      Down

    • C. 

      No acceleration, its motion is uniform

    • D. 

      No force, so no acceleration

  • 9. 
    Two vehicles are parked on an incline at the top of a hill. One is a small car, the other a very massive truck. You release the parking brake of each at the same time.  All other factors being equal, which vehicle accelerates faster?
    • A. 

      The car

    • B. 

      The truck

    • C. 

      They accelerate equally with gravity

    • D. 

      There is no acceleration, only uniform motion

  • 10. 
    The car and the truck accelerate down the hill and reach a flat level surface at the bottom.  Which vehicle will coast farther and take longer to come to rest?
    • A. 

      The car

    • B. 

      The truck

    • C. 

      They will travel the same speed

    • D. 

      They will get there at different times but stop at the same distance

  • 11. 
    An object weighs 30N on earth. A second object weighs 30N on the moon. Which the greater mass? (Note: due to its size, the moon has less gravity than the earth.)
    • A. 

      Object on the moon

    • B. 

      Object on earth

    • C. 

      Same mass

    • D. 

      Depends on air resistance

  • 12. 
    Compared to a 1kg block of solid iron, a 2kg block of solid iron has twice as much
    • A. 

      Inertia

    • B. 

      Mass

    • C. 

      Volume

    • D. 

      All

    • E. 

      None

  • 13. 
    A 10kg block is pushed across a horizontal surface with a horizontal force of 20N against a friction force of 10N. The acceleration of the block in meters per second per second is
    • A. 

      1

    • B. 

      5

    • C. 

      2

    • D. 

      10

  • 14. 
    A water skier has a mass of 79 kg and accelerates at 1.4 m/s2.  What is the net force acting on the skier?
    • A. 

      110.6

    • B. 

      56.4 N

    • C. 

      110.6 Kg

    • D. 

      110.6 N

  • 15. 
    What is the mass of an object if it takes a net force of 32 N to accelerate it at a rate of 0.88 m/s2
    • A. 

      28.2 N

    • B. 

      36.4 Kg

    • C. 

      34.6 N

    • D. 

      36.4 N

  • 16. 
    A net force of 15 N is applied to a cart with a mass of 2.1 kg. How long will it take the cart to travel 2.8 m, starting from rest?
    • A. 

      2.55 s

    • B. 

      .86 s

    • C. 

      31.5 s

    • D. 

      .39 s

  • 17. 
    A car has a mass of 820 kg. It starts from rest and travels 41 m in 3.0 s. What is the net force applied to the car?
    • A. 

      7471 N

    • B. 

      3735 N

    • C. 

      2780 N

    • D. 

      6882N

  • 18. 
    What is the acceleration of a box weighing 666 N if a force of 777 N is applied to it?
    • A. 

      15.8 m/s/s

    • B. 

      12.6 m/s/s

    • C. 

      54 m/s/s

    • D. 

      11.4 m/s/s

  • 19. 
    A 120 N force is applied to a block, causing an acceleration of 22.5 m/s2. What is the mass of the block?
    • A. 

      33.5 kg

    • B. 

      5.33 kg

    • C. 

      12 kg

    • D. 

      8.7 kg

  • 20. 
    A student tests the second law of motion by accelerating a block of ice at a rate of 3.5 m/s2. If the ice has a mass of 12.5 kg, what force must the student apply to the ice?
    • A. 

      47.35kg

    • B. 

      43.75kg

    • C. 

      47.35N

    • D. 

      43.75N

  • 21. 
    A block pushed with a force of 13.5 N accelerates at 6.5 m/s2 to the left. What is the mass of the block?
    • A. 

      4 kg

    • B. 

      2 kg

    • C. 

      87.75 kg

    • D. 

      .5 kg

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