I've tried a few different equations but I'm not sure how to start this problem. I just realized I'm looking for the initial velocity since the speed of the ball is constant. A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.45s after the ball is released from his hands. What is the speed of the ball? Speed of sound=340 m/s Bowling lane=16.5 m Time till sound of ball heard=2.45s This where I'm confused because I'm not sure which equations are the right ones to use. Here is what I've attempted so far and I think I just realized its all wrong: v=v(initial)+at 340 m/s=0+a(2.5s) a=136m/s^2 (16.5m)/(2.45s)=6.73 s I'm pretty sure this work is wrong but any help to start in the right direction would be much appreciated.