1. The problem statement, all variables and given/known data The 100kg block in the figure below takes 6.6s to reach the floor after being released from rest. What is the mass of block on the left? http://i241.photobucket.com/albums/ff4/alg5045/p8-33.gif 2. Relevant equations F=ma kinematic equation 3. The attempt at a solution I tried using accleeration = velocity/time, and I got .023 m/s^2. Then I used velocity = displacement/time, and I got .152 m/s. And then I got completely lost.