Protons are projected with an initial speed 0 = 9 550 m/s into a region where a uniform electric eld E = 720 N/C

Protons are projected with an initial speed υ₀ = 9 550 m/s into a region where a uniform electric field E = 720 N/C is present (Figure.). The protons are to hit a target that lies a horizontal distance of 1.27 mm from the point where the protons are launched. Find 

(a) The two projection angles  that will result in a hit and 

(b) The total duration of flight for each of the two trajectories. 

E= 720 N/C Target * 1.27 mm Proton beam