Homework Help: physics for scientists and engeneers I

Posted by Johnathon on Sunday, February 20, 2011 at 7:29pm.

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 - bobpursley, Sunday, February 20, 2011 at 7:31pm
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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