Mr. Warren - Physics

Answer all question with the correct response and submit for grading.
The Quiz is due no later than November 30, 2009 6:00 pm

• 1) If a particle's kinetic energy is zero, what is its momentum?
  

  Zero
  1 kg m/s
  15 kg m/s
  Negative
• 2) What is the momentum of a 0.148 kg baseball thrown with a velocity of 35 m/s toward home plate?
  

  5.1 kg m/s toward home plate
  5.1 kg m/s from home plate
  5.2 kg m/s toward home plate
  5.2 kg m/s away from home plate
• 3) After being struck by a bowling ball, a 1.5 kg bowling pin slides to the right at 3.0 m/s and collides head on with another 1.5 bowling pin initially at rest. What is the final velocity of the second pin if the first pin moves to the right 0.5 m/s after the collision?
  

  2.5 m/s to the left
  2.5 m/s to the right
  3.0 m/s to the left
  3.0 m/s to the right
• 4) From Question 3, what is the final velocity of the second pin if the first pin stops moving when it hits the second pin?
  

  2,5 m/s to the left
  2,5 m/s to the right
  3.0 m/s to the left
  3.0 m/s to the right
• 5) For a given change in momentum, if the net force that is applied to an object increases, what happens to the time interval over which the force is applied?
  
  

  The time interval increases
  The time interval decreases
  The time interval stays the same
  It is impossible to determine the answer
• 6) Which equation expresses the Law of Conservation of Momentum?
  

  p = mv
  m1v1i + m2v2i = M1V1f + M2V2f
  KE = p
  m1v1i _m2v2i = (m1 +m1)vf
• 7) In the Law of Conservation of Momentum states “In the absence of an external force (gravity, friction), the total momentum before the collision is equal to the total momentum after the collision.” True or False?
  
  True   False
• 8) Is KINETIC ENERGY conserved during the collision we call this an ELASTIC COLLISION, True or False
  True   False
• 9) KINETIC ENERGY is conserved during the collision we call this an ELASTIC COLLISION
  True   False
• 10) Momentum is defined as “Inertia"
  True   False