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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?

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

    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


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  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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