Average velocity of a particle moving in a straight line, with constant acceleration a and initial velocity u in first t seconds is. Average velocity of a particle moving in a straight line with constant acceleration a and initial velocity u in first t seconds is. October 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 3 - Motion in One Dimension , Volume 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related