Wednesday, February 11, 2015

CP Physics Impulse momentum test review



     1.     Be able to calculate momentum using metric as well as English units.  Ex Find P if 120 kg deer                runs at 12 mi/hr.  



2   2.  Calculate change in momentum of Prob 1  if the deer speeds up and  is now going 24 mi/hr

3.  Find the Net force to make a watermelon stop in the water if dropped from a known height   and the mass, height and the time to stop it in the water are known. 
 You will need to use kinematics to get the velocity immediately before striking the water and then use impulse momentum to solve for the  braking  Force in the water to make it stop.


4   4.   Find final velocity of a known mass object , initially at rest  with a known force acting on it during a defined time period.  Use impulse momentum

   5.     Calcualte the impulse either directly using F and delta T or  indirectly by using m delta V

    6.      A known mass car cruising at a known velocity applies a known braking force  over a certain time.  Find the final velocity and the displacement.


7   7.   Solve for final velocity during an inelastic collision where masses and initial velocities a re known

8   8.   Find the final velocity of one object during an  elastic collision where initial velocity  and mass of both are known as well as final velocity of the other object.

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