physics for scientists and engeneers I

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A tennis ball of mass m = 0.065 kg and speed v = 35 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° (see figure). What is the impulse given to the wall?
Magnitude

  • physics for scientists and engeneers I -

    well, the impulse was given perpendicular to the wall. THe compoent of velocity perpendicular is 35*.707, so change velocity is twice that.

    impulse= 2*35*.707 kg m/s

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