1. The problem statement, all variables and given/known data At t=0, a particle leaves the origin with the velocity of 9.0m/s in the positive y direction and moves in the xy plane with a constant acceleration of ( 2.0i-4.0j) m/s ^2 . At the instant the x coordinate of the particle is 15 m , what is the speed of the particle ? 2. Relevant equations V=u+aT , X= ut+ .5at 3. The attempt at a solution X coordinate: X=ut+.5at 15= 0+ 2t find t and plug it in the y - coorodinate y coordinate : V=9-4t Is that corrected ?