Answers edited by Matt

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• A ball with a mass of #3# #kg # and velocity of #1 # #ms^-1# collides with a second ball with a mass of #5# #kg# and velocity of #- 8# #ms^-1#. If #25%# of the kinetic energy is lost, what are the final velocities of the balls?
  
• Question #7e103
  
• Question #0cdf5
  
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• What is the direction of the magnetic force on the electron? What is the magnitude of the magnetic force on the electron? What is the direction of the magnetic force on the proton? What is the magnitude of the magnetic force on the proton?
  
• Question #4e99f
  
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• If an object is moving at #0 m/s# and accelerates to #60 m/s# over 5 seconds, what was the object's rate of acceleration?
  
• A 4.0 kilogram object moving west at 8.0 meters per second is subjected to a force to the east for 1.5 seconds, slowing it down to a speed of 2.0 meters per second. What was the net force that was applied?
  
• Why, according to Newton's laws, can superman not fly?