1. The problem statement, all variables and given/known data A block is pushed across a horizontal surface with a coefficient of kinetic friction of 0.15 by applying a 150 N horizontal force. The block accelerates at 2.53 m/s^2. Find the mass of the block. 2. Relevant equations ƩF = ma 3. The attempt at a solution μk = 0.15 Fa (applied force) = 150 N a = 2.53 m/s^2 m = ? I understand I must find the frictional force first, correct? and Ff (frictional force) = μFN (normal force) And to find normal force, FN = mg but then I come across this, which also requires for me to find mass...? What can I do?