Beginner's Kinematics Problem 1. The problem statement, all variables and given/known data An x-axis likes along an inclined plane, with the positive x-direction down the plane. Two objects A and B travel along the x-axis. At t=0, object A starts at x=0 with an initial velocity of 0. At t=1s, object B starts at x=10.00 m with a velocity of -5 m/s. Both objects have an acceleration of positive 2 m/s/s. At what time and position do the objects collide? At what time do the objects have the same speed? 2. Relevant equations xf= x + vi(t) + 0.5at2 vf= vi+a(t) 3. The attempt at a solution a) Equate the two equations (because x final is the same) and solve for t. OBJECT A: xf= 0 + (0 m/s)(tf-0 s) + 0.5(2 m/s/s)(tf-0)2 OBJECT B: xf= 10 m + (-5 m/s)(tf-1 s) + 0.5(2 m/s/s)(tf-1)2 I got t= 2.29 seconds using a graphic calculator. Is that correct? Are the equations above correct? Part b of the question is what's REALLY confusing me. There is no time that I can find that the objects have the same speed. OBJECT A: vf= (0 m/s) + (2.00 m/s/s)(tf-0s) OBJECT B: vf= (-5 m/s/s) + (2.00 m/s/s)(tf-1s) The two lines, when graphed, never intersect. Also, making object A's equation equal to object B's equation doesn't work either. What am I doing wrong??