You need to use the equations for motion with constant acceleration.
Time is the variable you do not know, so use an equation that does not include time: v2=v02+2a(x-x0)
The final velocity (the v on the left side of the equation) will be zero (because you will be stopped). You want to...
Please see the attached revised diagram showing the angle. There should be a negative sign in front of (m2)(a). On paper I wrote this down - just didn't type it correctly here. The combined equations from my work up should read: (m1)(a)+(m1)(g)(fk) = -(m2)(a)+(m2)(g)(cos30).
When you say...
Homework Statement
Block 1 of mass m1=2.0kg and block 2 of mass m2=3.0kg are connected by a string of negligible mass and are initially held in place. Block 2 is on a frictionless surface tilted at theta = 30 degrees. The coefficient of kinetic friction between block 1 and the horizontal...