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Homework Help: Physics 2101 problem

  1. Jun 15, 2007 #1
    1. The problem statement, all variables and given/known data

    A golfer, driving a golf ball off the tee, gives the ball a velocity of +33 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 4.45 10-3 s.

    (a) What is the change in momentum of the ball?
    kgm/s

    (b) Determine the average force applied to the ball by the club.
    N


    2. Relevant equations

    what equation are needed?

    3. The attempt at a solution

    not sure where to start on this problem, please help!
     
  2. jcsd
  3. Jun 15, 2007 #2

    malawi_glenn

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    Science Advisor
    Homework Helper

  4. Jun 15, 2007 #3
    thank you, this is the second problem I am stuck on...any help is appreciated.

    An 85 kg jogger is heading due east at a speed of 2.2 m/s. A 55 kg jogger is heading 34° north of east at a speed of 2.8 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
     
  5. Jun 15, 2007 #4

    Doc Al

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    Staff: Mentor

    Where are you stuck? Find the components of each jogger's momentum and add them up.
     
  6. Jun 15, 2007 #5
    thanks for the help from both of you...
     
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