A particle moves along the curved path sown. if the particle has a speed of 40ft/sec at A at time ta and a speed of 44ft/sec at B at time tb, determine the average values of he acceleration of hte particle between A and B, bath normal and tangent to the path. I found the average tangent acceleration to the path fairly easy. But I am not sure how to go about getting the normal average acceleration. I Tried to used the average tangential acceleration to get an average acceleration by 20tan(26)-20tan(36), i just am not sure. [URL=http://s1341.photobucket.com/user/nebula-314/media/20131229_171505_zps59dd5611.jpg.html][PLAIN]http://i1341.photobucket.com/albums/o745/nebula-314/20131229_171505_zps59dd5611.jpg[/URL][/PLAIN] My integral says vdv. ignore that it should just be dv.