one of the positrons created is moving at 9.476 10^4 m/s towards the beamline. The electric field created is 14.5 V/m. What is the positron's speed after it travels 0.002221 m? Include units in base SI.

• Positron mass is 9.109 10^-31 kg.
• Positron charge is1.6021810^19 C.
• Assume the electric field is fully uniform.
• Hint: total energy of the positron remains the same the entire time.

Answer: