Replying to This physics problem angers me, help appreciated

Two horizontal parallel plates, 1.2X10^2 m apart, are connected to a DC power supply. The electric field between the plates is 1.7X10^5 V/m. A sphere of mass 3.0X10^-15 with a positive charge of 2.6X10^-12 is injected into the region between the plates, with an initial speed of 3.3X10^3 m/s. It accelerates toward the negative plate. Determine the distance the positive charge moves toward the negative plate after 6.0X10^-6 s have elapsed. Gravitational effects may be ignored in this case.


The answer is 2.7X10^-3 m **apparently you don't need to use calculus to solve this.